The file C:\Users\MikeSwanson\claude-projects\Autocode-remix\Autocode-fork\frontend\src\components\SpecEditor.tsx has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   202→              Saved successfully
   203→            </span>
   204→          )}
   205→        </div>
   206→        <div className="flex items-center gap-2">
   207→          <button
   208→            onClick={handleShowHistory}
   209→            className={`px-3 py-1.5 text-sm border rounded transition-colors ${
   210→              showHistory
   211→                ? 'border-accent text-accent bg-accent/10'
   212→                : 'border-border hover:bg-surface-elevated'
   213→            }`}
   214→          >
   215→            {showHistory ? 'Hide History' : 'History'}
   216→          </button>
   217→          {hasChanges && (
   218→            <button
   219→              onClick={() => setShowDiff(!showDiff)}
   220→              className={`px-3 py-1.5 text-sm border rounded transition-colors ${
   221→                showDiff
   222→                  ? 'border-accent text-accent bg-accent/10'
   223→                  : 'border-border hover:bg-surface-elevated'
   224→              }`}
   225→            >
   226→              {showDiff ? 'Hide Diff' : 'Show Diff'}
   227→            </button>
   228→          )}
   229→          <button
   230→            onClick={handleReset}
   231→            disabled={!hasChanges || saving}
   232→            className="px-3 py-1.5 text-sm border border-border rounded hover:bg-surface-elevated transition-colors disabled:opacity-50 disabled:cursor-not-allowed"
   233→          >
   234→            Reset
   235→          </button>
   236→          <button
   237→            onClick={handleSave}
   238→            disabled={!hasChanges || saving}
   239→            className="px-3 py-1.5 text-sm bg-accent text-white rounded hover:bg-accent/80 transition-colors disabled:opacity-50 disabled:cursor-not-allowed"

        <div className="flex items-center gap-2">
          {hasChanges && (
            <button
              onClick={() => setShowDiff(!showDiff)}
              className={`px-3 py-1.5 text-sm border rounded transition-colors ${
                showDiff
                  ? 'border-accent text-accent bg-accent/10'
                  : 'border-border hover:bg-surface-elevated'
              }`}
            >
              {showDiff ? 'Hide Diff' : 'Show Diff'}
            </button>
          )}
          <button
            onClick={handleReset}
            disabled={!hasChanges || saving}
            className="px-3 py-1.5 text-sm border border-border rounded hover:bg-surface-elevated transition-colors disabled:opacity-50 disabled:cursor-not-allowed"
          >
            Reset
          </button>

        <div className="flex items-center gap-2">
          <button
            onClick={handleShowHistory}
            className={`px-3 py-1.5 text-sm border rounded transition-colors ${
              showHistory
                ? 'border-accent text-accent bg-accent/10'
                : 'border-border hover:bg-surface-elevated'
            }`}
          >
            {showHistory ? 'Hide History' : 'History'}
          </button>
          {hasChanges && (
            <button
              onClick={() => setShowDiff(!showDiff)}
              className={`px-3 py-1.5 text-sm border rounded transition-colors ${
                showDiff
                  ? 'border-accent text-accent bg-accent/10'
                  : 'border-border hover:bg-surface-elevated'
              }`}
            >
              {showDiff ? 'Hide Diff' : 'Show Diff'}
            </button>
          )}
          <button
            onClick={handleReset}
            disabled={!hasChanges || saving}
            className="px-3 py-1.5 text-sm border border-border rounded hover:bg-surface-elevated transition-colors disabled:opacity-50 disabled:cursor-not-allowed"
          >
            Reset
          </button>

import { useState, useEffect } from 'react'

interface SpecEditorProps {
  projectName: string
  onBack: () => void
}

interface SpecData {
  project_id: number
  version: number
  content: string
  created_at: string
  change_summary: string | null
}

interface SpecHistoryEntry {
  id: number
  project_id: number
  version: number
  content: string
  created_at: string
  change_summary: string | null
}

export function SpecEditor({ projectName, onBack }: SpecEditorProps) {
  const [spec, setSpec] = useState<SpecData | null>(null)
  const [loading, setLoading] = useState(true)
  const [error, setError] = useState<string | null>(null)
  const [content, setContent] = useState('')
  const [saving, setSaving] = useState(false)
  const [hasChanges, setHasChanges] = useState(false)
  const [showSaveSuccess, setShowSaveSuccess] = useState(false)
  const [showDiff, setShowDiff] = useState(false)
  const [showHistory, setShowHistory] = useState(false)
  const [history, setHistory] = useState<SpecHistoryEntry[]>([])
  const [loadingHistory, setLoadingHistory] = useState(false)

  useEffect(() => {
    fetchSpec()
  }, [projectName])

  const fetchSpec = async () => {
    try {
      setLoading(true)
      const res = await fetch(`/api/projects/${projectName}/spec`)
      if (!res.ok) throw new Error('Failed to fetch spec')
      const data: SpecData = await res.json()
      setSpec(data)
      setContent(data.content)
      setError(null)
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Unknown error')
    } finally {
      setLoading(false)
    }
  }

  const fetchHistory = async () => {
    try {
      setLoadingHistory(true)
      const res = await fetch(`/api/projects/${projectName}/spec/history`)
      if (!res.ok) throw new Error('Failed to fetch spec history')
      const data = await res.json()
      setHistory(data.history)
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Unknown error')
    } finally {
      setLoadingHistory(false)
    }
  }

  const handleShowHistory = () => {
    if (!showHistory) {
      fetchHistory()
    }
    setShowHistory(!showHistory)
  }

  const handleContentChange = (newContent: string) => {
    setContent(newContent)
    setHasChanges(newContent !== spec?.content)
  }

  const handleSave = async () => {
    try {
      setSaving(true)
      setError(null)

      const res = await fetch(`/api/projects/${projectName}/spec`, {
        method: 'PUT',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({
          content,
          change_summary: 'Manual edit from Spec Editor'
        }),
      })

      if (!res.ok) {
        const data = await res.json()
        throw new Error(data.detail || 'Failed to save spec')
      }

      const updatedSpec: SpecData = await res.json()
      setSpec(updatedSpec)
      setHasChanges(false)
      setShowSaveSuccess(true)
      setTimeout(() => setShowSaveSuccess(false), 3000)
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Unknown error')
    } finally {
      setSaving(false)
    }
  }

  const handleReset = () => {
    if (spec) {
      setContent(spec.content)
      setHasChanges(false)
    }
  }

  // Simple line-by-line diff computation
  interface DiffLine {
    type: 'unchanged' | 'added' | 'removed'
    content: string
    lineNumber?: number
  }

  const computeDiff = (): { oldLines: DiffLine[], newLines: DiffLine[] } => {
    const originalLines = (spec?.content || '').split('\n')
    const currentLines = content.split('\n')

    const oldLines: DiffLine[] = []
    const newLines: DiffLine[] = []

    const maxLen = Math.max(originalLines.length, currentLines.length)

    for (let i = 0; i < maxLen; i++) {
      const oldLine = originalLines[i]
      const newLine = currentLines[i]

      if (oldLine === undefined) {
        // Line was added
        oldLines.push({ type: 'unchanged', content: '' })
        newLines.push({ type: 'added', content: newLine, lineNumber: i + 1 })
      } else if (newLine === undefined) {
        // Line was removed
        oldLines.push({ type: 'removed', content: oldLine, lineNumber: i + 1 })
        newLines.push({ type: 'unchanged', content: '' })
      } else if (oldLine !== newLine) {
        // Line was modified
        oldLines.push({ type: 'removed', content: oldLine, lineNumber: i + 1 })
        newLines.push({ type: 'added', content: newLine, lineNumber: i + 1 })
      } else {
        // Line unchanged
        oldLines.push({ type: 'unchanged', content: oldLine, lineNumber: i + 1 })
        newLines.push({ type: 'unchanged', content: newLine, lineNumber: i + 1 })
      }
    }

    return { oldLines, newLines }
  }

  if (loading) {
    return (

          Loading spec...

    )
  }

  return (

      {/* Header */}

          <button
            onClick={onBack}
            className="flex items-center gap-2 text-text-secondary hover:text-text-primary transition-colors"
          >
            <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M15 19l-7-7 7-7" />
            </svg>
            Back
          </button>

Spec Editor

          {spec && (

              Version {spec.version}

          )}
          {hasChanges && (

              Unsaved changes

          )}
          {showSaveSuccess && (

              Saved successfully

          )}

          {hasChanges && (
            <button
              onClick={() => setShowDiff(!showDiff)}
              className={`px-3 py-1.5 text-sm border rounded transition-colors ${
                showDiff
                  ? 'border-accent text-accent bg-accent/10'
                  : 'border-border hover:bg-surface-elevated'
              }`}
            >
              {showDiff ? 'Hide Diff' : 'Show Diff'}
            </button>
          )}
          <button
            onClick={handleReset}
            disabled={!hasChanges || saving}
            className="px-3 py-1.5 text-sm border border-border rounded hover:bg-surface-elevated transition-colors disabled:opacity-50 disabled:cursor-not-allowed"
          >
            Reset
          </button>
          <button
            onClick={handleSave}
            disabled={!hasChanges || saving}
            className="px-3 py-1.5 text-sm bg-accent text-white rounded hover:bg-accent/80 transition-colors disabled:opacity-50 disabled:cursor-not-allowed"
          >
            {saving ? 'Saving...' : 'Save'}
          </button>

      {/* Error */}
      {error && (

          <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 8v4m0 4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z" />
          </svg>
          {error}

      )}

      {/* Diff View */}
      {showDiff && hasChanges && (

Changes Preview

                  Removed

                  Added

              {/* Original (left side) */}

Original (v{spec?.version})

                  {computeDiff().oldLines.map((line, idx) => (

                        {line.lineNumber || ''}

                      {line.content || '\u00A0'}

                  ))}

              {/* Modified (right side) */}

Modified

                  {computeDiff().newLines.map((line, idx) => (

                        {line.lineNumber || ''}

                      {line.content || '\u00A0'}

                  ))}

      )}

      {/* Editor */}

          <textarea
            value={content}
            onChange={(e) => handleContentChange(e.target.value)}
            className="w-full h-[500px] p-4 font-mono text-sm bg-surface-elevated border border-border rounded-lg resize-none focus:outline-none focus:ring-2 focus:ring-accent focus:border-transparent"
            placeholder="# Project Specification

Enter your project specification here...

## Features
- Feature 1
- Feature 2

## Requirements
- Requirement 1
- Requirement 2"
            spellCheck={false}
          />

            {content.split('\n').length} lines | {content.length} characters

        {/* Metadata */}
        {spec && (

Spec Info

                Version:
                {spec.version}

                Last Updated:
                {new Date(spec.created_at).toLocaleString()}

                Last Change:
                {spec.change_summary || 'N/A'}

        )}

  )
}

export default SpecEditor

+            onClick={handleShowHistory}

+            className={`px-3 py-1.5 text-sm border rounded transition-colors ${

+                ? 'border-accent text-accent bg-accent/10'

+                : 'border-border hover:bg-surface-elevated'

+            {showHistory ? 'Hide History' : 'History'}


Now let me find where to add the history panel. Let me read more of the file to find the right location:


240→          >
   241→            {saving ? 'Saving...' : 'Save'}
   242→          </button>
   243→

   244→

   245→
   246→      {/* Error */}
   247→      {error && (
   248→

   249→          <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
   250→            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 8v4m0 4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z" />
   251→          </svg>
   252→          {error}
   253→

   254→      )}
   255→
   256→      {/* Diff View */}
   257→      {showDiff && hasChanges && (
   258→

   259→

   260→

   261→
Changes Preview

   262→

   263→
   264→
   265→                  Removed
   266→
   267→
   268→
   269→                  Added
   270→
   271→

   272→

   273→

   274→              {/* Original (left side) */}
   275→

   276→
Original (v{spec?.version})

   277→

   278→                  {computeDiff().oldLines.map((line, idx) => (
   279→

   287→
   288→                        {line.lineNumber || ''}
   289→
   290→                      {line.content || '\u00A0'}
   291→

   292→                  ))}
   293→

   294→

   295→              {/* Modified (right side) */}
   296→

   297→
Modified

   298→

   299→                  {computeDiff().newLines.map((line, idx) => (

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

>
            {saving ? 'Saving...' : 'Save'}
          </button>

      {/* Error */}
      {error && (

          <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 8v4m0 4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z" />
          </svg>
          {error}

      )}

      {/* Diff View */}
      {showDiff && hasChanges && (

Changes Preview

                  Removed

                  Added

              {/* Original (left side) */}

Original (v{spec?.version})

                  {computeDiff().oldLines.map((line, idx) => (

                        {line.lineNumber || ''}

                      {line.content || '\u00A0'}

                  ))}

              {/* Modified (right side) */}

Modified

                  {computeDiff().newLines.map((line, idx) => (


300→

   308→
   309→                        {line.lineNumber || ''}
   310→
   311→                      {line.content || '\u00A0'}
   312→

   313→                  ))}
   314→

   315→

   316→

   317→

   318→

   319→      )}
   320→
   321→      {/* Editor */}
   322→

   323→

   324→          <textarea
   325→            value={content}
   326→            onChange={(e) => handleContentChange(e.target.value)}
   327→            className="w-full h-[500px] p-4 font-mono text-sm bg-surface-elevated border border-border rounded-lg resize-none focus:outline-none focus:ring-2 focus:ring-accent focus:border-transparent"
   328→            placeholder="# Project Specification
   329→
   330→Enter your project specification here...
   331→
   332→## Features
   333→- Feature 1
   334→- Feature 2
   335→
   336→## Requirements
   337→- Requirement 1
   338→- Requirement 2"
   339→            spellCheck={false}
   340→          />
   341→

   342→            {content.split('\n').length} lines | {content.length} characters
   343→

   344→

   345→
   346→        {/* Metadata */}
   347→        {spec && (
   348→

   349→
Spec Info

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

                        {line.lineNumber || ''}

                      {line.content || '\u00A0'}

                  ))}

      )}

      {/* Editor */}

          <textarea
            value={content}
            onChange={(e) => handleContentChange(e.target.value)}
            className="w-full h-[500px] p-4 font-mono text-sm bg-surface-elevated border border-border rounded-lg resize-none focus:outline-none focus:ring-2 focus:ring-accent focus:border-transparent"
            placeholder="# Project Specification

Enter your project specification here...

## Features
- Feature 1
- Feature 2

## Requirements
- Requirement 1
- Requirement 2"
            spellCheck={false}
          />

            {content.split('\n').length} lines | {content.length} characters

        {/* Metadata */}
        {spec && (

Spec Info


Let me add the history panel after the diff view section:


Edit

      )}

      {/* Editor */}

          <textarea

      )}

      {/* History Panel */}
      {showHistory && (

Version History

              {history.length} versions

            {loadingHistory ? (

                Loading history...

            ) : history.length === 0 ? (

                No version history available

            ) : (

                {history.map((entry) => (

                        Version {entry.version}
                        {entry.version === spec?.version && (

                            Current

                        )}

                        {new Date(entry.created_at).toLocaleString()}

                    {entry.change_summary && (

                        {entry.change_summary}

                    )}

                ))}

            )}

      )}

      {/* Editor */}

          <textarea


The file C:\Users\MikeSwanson\claude-projects\Autocode-remix\Autocode-fork\frontend\src\components\SpecEditor.tsx has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   313→                  ))}
   314→

   315→

   316→

   317→

   318→

   319→      )}
   320→
   321→      {/* History Panel */}
   322→      {showHistory && (
   323→

   324→

   325→

   326→
Version History

   327→              {history.length} versions
   328→

   329→            {loadingHistory ? (
   330→

   331→

   332→                Loading history...
   333→

   334→            ) : history.length === 0 ? (
   335→

   336→                No version history available
   337→

   338→            ) : (
   339→

   340→                {history.map((entry) => (
   341→

   347→

   348→

   349→                        Version {entry.version}
   350→                        {entry.version === spec?.version && (
   351→
   352→                            Current
   353→
   354→                        )}
   355→

   356→
   357→                        {new Date(entry.created_at).toLocaleString()}
   358→
   359→

   360→                    {entry.change_summary && (
   361→

   362→                        {entry.change_summary}
   363→

   364→                    )}
   365→

   366→                ))}
   367→

   368→            )}
   369→

   370→

   371→      )}
   372→
   373→      {/* Editor */}
   374→

   375→

   376→          <textarea
   377→            value={content}
   378→            onChange={(e) => handleContentChange(e.target.value)}
   379→            className="w-full h-[500px] p-4 font-mono text-sm bg-surface-elevated border border-border rounded-lg resize-none focus:outline-none focus:ring-2 focus:ring-accent focus:border-transparent"
   380→            placeholder="# Project Specification

      )}

      {/* Editor */}

          <textarea

      )}

      {/* History Panel */}
      {showHistory && (

Version History

              {history.length} versions

            {loadingHistory ? (

                Loading history...

            ) : history.length === 0 ? (

                No version history available

            ) : (

                {history.map((entry) => (

                        Version {entry.version}
                        {entry.version === spec?.version && (

                            Current

                        )}

                        {new Date(entry.created_at).toLocaleString()}

                    {entry.change_summary && (

                        {entry.change_summary}

                    )}

                ))}

            )}

      )}

      {/* Editor */}

          <textarea

import { useState, useEffect } from 'react'

interface SpecEditorProps {
  projectName: string
  onBack: () => void
}

interface SpecData {
  project_id: number
  version: number
  content: string
  created_at: string
  change_summary: string | null
}

interface SpecHistoryEntry {
  id: number
  project_id: number
  version: number
  content: string
  created_at: string
  change_summary: string | null
}

export function SpecEditor({ projectName, onBack }: SpecEditorProps) {
  const [spec, setSpec] = useState<SpecData | null>(null)
  const [loading, setLoading] = useState(true)
  const [error, setError] = useState<string | null>(null)
  const [content, setContent] = useState('')
  const [saving, setSaving] = useState(false)
  const [hasChanges, setHasChanges] = useState(false)
  const [showSaveSuccess, setShowSaveSuccess] = useState(false)
  const [showDiff, setShowDiff] = useState(false)
  const [showHistory, setShowHistory] = useState(false)
  const [history, setHistory] = useState<SpecHistoryEntry[]>([])
  const [loadingHistory, setLoadingHistory] = useState(false)

  useEffect(() => {
    fetchSpec()
  }, [projectName])

  const fetchSpec = async () => {
    try {
      setLoading(true)
      const res = await fetch(`/api/projects/${projectName}/spec`)
      if (!res.ok) throw new Error('Failed to fetch spec')
      const data: SpecData = await res.json()
      setSpec(data)
      setContent(data.content)
      setError(null)
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Unknown error')
    } finally {
      setLoading(false)
    }
  }

  const fetchHistory = async () => {
    try {
      setLoadingHistory(true)
      const res = await fetch(`/api/projects/${projectName}/spec/history`)
      if (!res.ok) throw new Error('Failed to fetch spec history')
      const data = await res.json()
      setHistory(data.history)
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Unknown error')
    } finally {
      setLoadingHistory(false)
    }
  }

  const handleShowHistory = () => {
    if (!showHistory) {
      fetchHistory()
    }
    setShowHistory(!showHistory)
  }

  const handleContentChange = (newContent: string) => {
    setContent(newContent)
    setHasChanges(newContent !== spec?.content)
  }

  const handleSave = async () => {
    try {
      setSaving(true)
      setError(null)

      const res = await fetch(`/api/projects/${projectName}/spec`, {
        method: 'PUT',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({
          content,
          change_summary: 'Manual edit from Spec Editor'
        }),
      })

      if (!res.ok) {
        const data = await res.json()
        throw new Error(data.detail || 'Failed to save spec')
      }

      const updatedSpec: SpecData = await res.json()
      setSpec(updatedSpec)
      setHasChanges(false)
      setShowSaveSuccess(true)
      setTimeout(() => setShowSaveSuccess(false), 3000)
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Unknown error')
    } finally {
      setSaving(false)
    }
  }

  const handleReset = () => {
    if (spec) {
      setContent(spec.content)
      setHasChanges(false)
    }
  }

  // Simple line-by-line diff computation
  interface DiffLine {
    type: 'unchanged' | 'added' | 'removed'
    content: string
    lineNumber?: number
  }

  const computeDiff = (): { oldLines: DiffLine[], newLines: DiffLine[] } => {
    const originalLines = (spec?.content || '').split('\n')
    const currentLines = content.split('\n')

    const oldLines: DiffLine[] = []
    const newLines: DiffLine[] = []

    const maxLen = Math.max(originalLines.length, currentLines.length)

    for (let i = 0; i < maxLen; i++) {
      const oldLine = originalLines[i]
      const newLine = currentLines[i]

      if (oldLine === undefined) {
        // Line was added
        oldLines.push({ type: 'unchanged', content: '' })
        newLines.push({ type: 'added', content: newLine, lineNumber: i + 1 })
      } else if (newLine === undefined) {
        // Line was removed
        oldLines.push({ type: 'removed', content: oldLine, lineNumber: i + 1 })
        newLines.push({ type: 'unchanged', content: '' })
      } else if (oldLine !== newLine) {
        // Line was modified
        oldLines.push({ type: 'removed', content: oldLine, lineNumber: i + 1 })
        newLines.push({ type: 'added', content: newLine, lineNumber: i + 1 })
      } else {
        // Line unchanged
        oldLines.push({ type: 'unchanged', content: oldLine, lineNumber: i + 1 })
        newLines.push({ type: 'unchanged', content: newLine, lineNumber: i + 1 })
      }
    }

    return { oldLines, newLines }
  }

  if (loading) {
    return (

          Loading spec...

    )
  }

  return (

      {/* Header */}

          <button
            onClick={onBack}
            className="flex items-center gap-2 text-text-secondary hover:text-text-primary transition-colors"
          >
            <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M15 19l-7-7 7-7" />
            </svg>
            Back
          </button>

Spec Editor

          {spec && (

              Version {spec.version}

          )}
          {hasChanges && (

              Unsaved changes

          )}
          {showSaveSuccess && (

              Saved successfully

          )}

          <button
            onClick={handleShowHistory}
            className={`px-3 py-1.5 text-sm border rounded transition-colors ${
              showHistory
                ? 'border-accent text-accent bg-accent/10'
                : 'border-border hover:bg-surface-elevated'
            }`}
          >
            {showHistory ? 'Hide History' : 'History'}
          </button>
          {hasChanges && (
            <button
              onClick={() => setShowDiff(!showDiff)}
              className={`px-3 py-1.5 text-sm border rounded transition-colors ${
                showDiff
                  ? 'border-accent text-accent bg-accent/10'
                  : 'border-border hover:bg-surface-elevated'
              }`}
            >
              {showDiff ? 'Hide Diff' : 'Show Diff'}
            </button>
          )}
          <button
            onClick={handleReset}
            disabled={!hasChanges || saving}
            className="px-3 py-1.5 text-sm border border-border rounded hover:bg-surface-elevated transition-colors disabled:opacity-50 disabled:cursor-not-allowed"
          >
            Reset
          </button>
          <button
            onClick={handleSave}
            disabled={!hasChanges || saving}
            className="px-3 py-1.5 text-sm bg-accent text-white rounded hover:bg-accent/80 transition-colors disabled:opacity-50 disabled:cursor-not-allowed"
          >
            {saving ? 'Saving...' : 'Save'}
          </button>

      {/* Error */}
      {error && (

          <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 8v4m0 4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z" />
          </svg>
          {error}

      )}

      {/* Diff View */}
      {showDiff && hasChanges && (

Changes Preview

                  Removed

                  Added

              {/* Original (left side) */}

Original (v{spec?.version})

                  {computeDiff().oldLines.map((line, idx) => (

                        {line.lineNumber || ''}

                      {line.content || '\u00A0'}

                  ))}

              {/* Modified (right side) */}

Modified

                  {computeDiff().newLines.map((line, idx) => (

                        {line.lineNumber || ''}

                      {line.content || '\u00A0'}

                  ))}

      )}

      {/* Editor */}

          <textarea
            value={content}
            onChange={(e) => handleContentChange(e.target.value)}
            className="w-full h-[500px] p-4 font-mono text-sm bg-surface-elevated border border-border rounded-lg resize-none focus:outline-none focus:ring-2 focus:ring-accent focus:border-transparent"
            placeholder="# Project Specification

Enter your project specification here...

## Features
- Feature 1
- Feature 2

## Requirements
- Requirement 1
- Requirement 2"
            spellCheck={false}
          />

            {content.split('\n').length} lines | {content.length} characters

        {/* Metadata */}
        {spec && (

Spec Info

                Version:
                {spec.version}

                Last Updated:
                {new Date(spec.created_at).toLocaleString()}

                Last Change:
                {spec.change_summary || 'N/A'}

        )}

  )
}

export default SpecEditor

+          <div className="bg-surface-elevated rounded-lg border border-border overflow-hidden">

+            <div className="flex items-center justify-between px-4 py-2 border-b border-border bg-surface">

+              {history.length} versions

+              <div className="flex items-center justify-center py-8">

+                <div className="w-5 h-5 border-2 border-accent border-t-transparent rounded-full animate-spin" />

+            ) : history.length === 0 ? (

+              <div className="px-4 py-8 text-center text-text-secondary text-sm">

+                No version history available

+              <div className="max-h-[300px] overflow-auto divide-y divide-border">

+                {history.map((entry) => (

+                    className={`px-4 py-3 hover:bg-surface transition-colors ${

+                      entry.version === spec?.version ? 'bg-accent/5' : ''

+                    <div className="flex items-center justify-between">

+                      <div className="flex items-center gap-3">

+                        Version {entry.version}

+                        {entry.version === spec?.version && (

+                          <span className="text-xs px-1.5 py-0.5 bg-accent/20 text-accent rounded">

+                      <span className="text-xs text-text-secondary">

+                        {new Date(entry.created_at).toLocaleString()}

+                    {entry.change_summary && (

+                      <p className="mt-1 text-xs text-text-secondary">

+                        {entry.change_summary}


Now let me test the history feature. First let me reload the page and navigate to the spec editor:


### Ran Playwright code
await page.goto('http://localhost:5173/');

### New console messages
- [INFO] %cDownload the React DevTools for a better development experience: https://reactjs.org/link/r...

### Page state
- Page URL: http://localhost:5173/
- Page Title: Autocoder+
- Page Snapshot:
```yaml
- generic [ref=e3]:
  - banner [ref=e4]:
    - heading "Autocoder+" [level=1] [ref=e5]
    - generic [ref=e6]: v1.0.0
  - main [ref=e7]:
    - generic [ref=e8]:
      - generic [ref=e9]:
        - heading "Welcome to Autocoder+" [level=2] [ref=e10]
        - paragraph [ref=e11]: Enhanced autonomous coding agent with interactive permission management, dual-agent execution, and infrastructure discovery.
        - generic [ref=e12]:
          - heading "Backend Status" [level=3] [ref=e13]
          - generic [ref=e14]:
            - generic [ref=e17]: Connected
            - generic [ref=e18]:
              - generic [ref=e19]: Service:autocoder-plus
              - generic [ref=e20]: Version:1.0.0
              - generic [ref=e21]: Status:healthy
              - generic [ref=e22]: Last check:2:25:16 AM
        - generic [ref=e23]:
          - generic [ref=e24]:
            - generic [ref=e25]: "0"
            - generic [ref=e26]: Features
            - generic [ref=e27]: pending
          - generic [ref=e28]:
            - generic [ref=e29]: "0"
            - generic [ref=e30]: Passing
            - generic [ref=e31]: tests
          - generic [ref=e32]:
            - generic [ref=e33]: "0"
            - generic [ref=e34]: In Progress
            - generic [ref=e35]: features
          - generic [ref=e36]:
            - generic [ref=e37]: "0"
            - generic [ref=e38]: Stalled
            - generic [ref=e39]: blocked
      - generic [ref=e41]:
        - generic [ref=e42]:
          - generic [ref=e43]:
            - heading "Projects" [level=2] [ref=e44]
            - generic [ref=e45]: 17 total
          - button "Create New Project" [ref=e46] [cursor=pointer]:
            - img [ref=e47]
            - text: Create New Project
        - generic [ref=e49]:
          - generic [ref=e50] [cursor=pointer]:
            - generic [ref=e51]:
              - generic [ref=e54]:
                - heading "analyze-test" [level=3] [ref=e55]
                - paragraph [ref=e56]: /tmp/analyze-test
              - generic [ref=e57]:
                - generic [ref=e58]:
                  - text: Active
                  - paragraph [ref=e59]: Just now
                - button "Project settings" [ref=e60]:
                  - img [ref=e61]
                - button "Duplicate project" [ref=e64]:
                  - img [ref=e65]
                - button "Delete project" [ref=e67]:
                  - img [ref=e68]
            - generic [ref=e70]:
              - generic [ref=e71]: Spec v1
              - generic [ref=e72]: Created Just now
          - generic [ref=e73] [cursor=pointer]:
            - generic [ref=e74]:
              - generic [ref=e77]:
                - heading "conn-test" [level=3] [ref=e78]
                - paragraph [ref=e79]: /tmp/conn-test
              - generic [ref=e80]:
                - generic [ref=e81]:
                  - text: Active
                  - paragraph [ref=e82]: Just now
                - button "Project settings" [ref=e83]:
                  - img [ref=e84]
                - button "Duplicate project" [ref=e87]:
                  - img [ref=e88]
                - button "Delete project" [ref=e90]:
                  - img [ref=e91]
            - generic [ref=e93]:
              - generic [ref=e94]: Spec v1
              - generic [ref=e95]: Created Just now
          - generic [ref=e96] [cursor=pointer]:
            - generic [ref=e97]:
              - generic [ref=e100]:
                - heading "detail-test" [level=3] [ref=e101]
                - paragraph [ref=e102]: /tmp/detail-test
              - generic [ref=e103]:
                - generic [ref=e104]:
                  - text: Active
                  - paragraph [ref=e105]: Just now
                - button "Project settings" [ref=e106]:
                  - img [ref=e107]
                - button "Duplicate project" [ref=e110]:
                  - img [ref=e111]
                - button "Delete project" [ref=e113]:
                  - img [ref=e114]
            - generic [ref=e116]:
              - generic [ref=e117]: Spec v6
              - generic [ref=e118]: Created Just now
          - generic [ref=e119] [cursor=pointer]:
            - generic [ref=e120]:
              - generic [ref=e123]:
                - heading "discover-test" [level=3] [ref=e124]
                - paragraph [ref=e125]: /tmp/discover-test
              - generic [ref=e126]:
                - generic [ref=e127]:
                  - text: Active
                  - paragraph [ref=e128]: Just now
                - button "Project settings" [ref=e129]:
                  - img [ref=e130]
                - button "Duplicate project" [ref=e133]:
                  - img [ref=e134]
                - button "Delete project" [ref=e136]:
                  - img [ref=e137]
            - generic [ref=e139]:
              - generic [ref=e140]: Spec v1
              - generic [ref=e141]: Created Just now
          - generic [ref=e142] [cursor=pointer]:
            - generic [ref=e143]:
              - generic [ref=e146]:
                - heading "discover-test2" [level=3] [ref=e147]
                - paragraph [ref=e148]: /tmp/discover-test2
              - generic [ref=e149]:
                - generic [ref=e150]:
                  - text: Active
                  - paragraph [ref=e151]: Just now
                - button "Project settings" [ref=e152]:
                  - img [ref=e153]
                - button "Duplicate project" [ref=e156]:
                  - img [ref=e157]
                - button "Delete project" [ref=e159]:
                  - img [ref=e160]
            - generic [ref=e162]:
              - generic [ref=e163]: Spec v1
              - generic [ref=e164]: Created Just now
          - generic [ref=e165] [cursor=pointer]:
            - generic [ref=e166]:
              - generic [ref=e169]:
                - heading "duplicated-project" [level=3] [ref=e170]
                - paragraph [ref=e171]: /tmp/original
              - generic [ref=e172]:
                - generic [ref=e173]:
                  - text: Active
                  - paragraph [ref=e174]: Just now
                - button "Project settings" [ref=e175]:
                  - img [ref=e176]
                - button "Duplicate project" [ref=e179]:
                  - img [ref=e180]
                - button "Delete project" [ref=e182]:
                  - img [ref=e183]
            - generic [ref=e185]:
              - generic [ref=e186]: Spec v1
              - generic [ref=e187]: Created Just now
          - generic [ref=e188] [cursor=pointer]:
            - generic [ref=e189]:
              - generic [ref=e192]:
                - heading "infra-test" [level=3] [ref=e193]
                - paragraph [ref=e194]: /tmp/infra-test
              - generic [ref=e195]:
                - generic [ref=e196]:
                  - text: Active
                  - paragraph [ref=e197]: Just now
                - button "Project settings" [ref=e198]:
                  - img [ref=e199]
                - button "Duplicate project" [ref=e202]:
                  - img [ref=e203]
                - button "Delete project" [ref=e205]:
                  - img [ref=e206]
            - generic [ref=e208]:
              - generic [ref=e209]: Spec v1
              - generic [ref=e210]: Created Just now
          - generic [ref=e211] [cursor=pointer]:
            - generic [ref=e212]:
              - generic [ref=e215]:
                - heading "kanban-test" [level=3] [ref=e216]
                - paragraph [ref=e217]: /tmp/kanban-test
              - generic [ref=e218]:
                - generic [ref=e219]:
                  - text: Active
                  - paragraph [ref=e220]: Just now
                - button "Project settings" [ref=e221]:
                  - img [ref=e222]
                - button "Duplicate project" [ref=e225]:
                  - img [ref=e226]
                - button "Delete project" [ref=e228]:
                  - img [ref=e229]
            - generic [ref=e231]:
              - generic [ref=e232]: Spec v1
              - generic [ref=e233]: Created Just now
          - generic [ref=e234] [cursor=pointer]:
            - generic [ref=e235]:
              - generic [ref=e238]:
                - heading "original-project" [level=3] [ref=e239]
                - paragraph [ref=e240]: /tmp/original
              - generic [ref=e241]:
                - generic [ref=e242]:
                  - text: Active
                  - paragraph [ref=e243]: Just now
                - button "Project settings" [ref=e244]:
                  - img [ref=e245]
                - button "Duplicate project" [ref=e248]:
                  - img [ref=e249]
                - button "Delete project" [ref=e251]:
                  - img [ref=e252]
            - generic [ref=e254]:
              - generic [ref=e255]: Spec v1
              - generic [ref=e256]: Created Just now
          - generic [ref=e257] [cursor=pointer]:
            - generic [ref=e258]:
              - generic [ref=e261]:
                - heading "stats-test-project" [level=3] [ref=e262]
                - paragraph [ref=e263]: /tmp/stats-test
              - generic [ref=e264]:
                - generic [ref=e265]:
                  - text: Active
                  - paragraph [ref=e266]: Just now
                - button "Project settings" [ref=e267]:
                  - img [ref=e268]
                - button "Duplicate project" [ref=e271]:
                  - img [ref=e272]
                - button "Delete project" [ref=e274]:
                  - img [ref=e275]
            - generic [ref=e277]:
              - generic [ref=e278]: Spec v1
              - generic [ref=e279]: Created Just now
          - generic [ref=e280] [cursor=pointer]:
            - generic [ref=e281]:
              - generic [ref=e284]:
                - heading "test-project" [level=3] [ref=e285]
                - paragraph [ref=e286]: /tmp/test-project
              - generic [ref=e287]:
                - generic [ref=e288]:
                  - text: Active
                  - paragraph [ref=e289]: Just now
                - button "Project settings" [ref=e290]:
                  - img [ref=e291]
                - button "Duplicate project" [ref=e294]:
                  - img [ref=e295]
                - button "Delete project" [ref=e297]:
                  - img [ref=e298]
            - generic [ref=e300]:
              - generic [ref=e301]: Spec v1
              - generic [ref=e302]: Created Just now
          - generic [ref=e303] [cursor=pointer]:
            - generic [ref=e304]:
              - generic [ref=e307]:
                - heading "test-project-001" [level=3] [ref=e308]
                - paragraph [ref=e309]: /tmp/test
              - generic [ref=e310]:
                - generic [ref=e311]:
                  - text: Active
                  - paragraph [ref=e312]: Just now
                - button "Project settings" [ref=e313]:
                  - img [ref=e314]
                - button "Duplicate project" [ref=e317]:
                  - img [ref=e318]
                - button "Delete project" [ref=e320]:
                  - img [ref=e321]
            - generic [ref=e323]:
              - generic [ref=e324]: Spec v1
              - generic [ref=e325]: Created Just now
          - generic [ref=e326] [cursor=pointer]:
            - generic [ref=e327]:
              - generic [ref=e330]:
                - heading "test-project-002" [level=3] [ref=e331]
                - paragraph [ref=e332]: /tmp/test2
              - generic [ref=e333]:
                - generic [ref=e334]:
                  - text: Active
                  - paragraph [ref=e335]: Just now
                - button "Project settings" [ref=e336]:
                  - img [ref=e337]
                - button "Duplicate project" [ref=e340]:
                  - img [ref=e341]
                - button "Delete project" [ref=e343]:
                  - img [ref=e344]
            - generic [ref=e346]:
              - generic [ref=e347]: Spec v1
              - generic [ref=e348]: Created Just now
          - generic [ref=e349] [cursor=pointer]:
            - generic [ref=e350]:
              - generic [ref=e353]:
                - heading "test-project-duplicated" [level=3] [ref=e354]
                - paragraph [ref=e355]: /tmp/updated-settings-path
              - generic [ref=e356]:
                - generic [ref=e357]:
                  - text: Active
                  - paragraph [ref=e358]: Just now
                - button "Project settings" [ref=e359]:
                  - img [ref=e360]
                - button "Duplicate project" [ref=e363]:
                  - img [ref=e364]
                - button "Delete project" [ref=e366]:
                  - img [ref=e367]
            - generic [ref=e369]:
              - generic [ref=e370]: Spec v1
              - generic [ref=e371]: Created Just now
          - generic [ref=e372] [cursor=pointer]:
            - generic [ref=e373]:
              - generic [ref=e376]:
                - heading "test-update-feature" [level=3] [ref=e377]
                - paragraph [ref=e378]: /tmp/test-update
              - generic [ref=e379]:
                - generic [ref=e380]:
                  - text: Active
                  - paragraph [ref=e381]: Just now
                - button "Project settings" [ref=e382]:
                  - img [ref=e383]
                - button "Duplicate project" [ref=e386]:
                  - img [ref=e387]
                - button "Delete project" [ref=e389]:
                  - img [ref=e390]
            - generic [ref=e392]:
              - generic [ref=e393]: Spec v1
              - generic [ref=e394]: Created Just now
          - generic [ref=e395] [cursor=pointer]:
            - generic [ref=e396]:
              - generic [ref=e399]:
                - heading "update-test" [level=3] [ref=e400]
                - paragraph [ref=e401]: /tmp/updated-path
              - generic [ref=e402]:
                - generic [ref=e403]:
                  - text: Active
                  - paragraph [ref=e404]: Just now
                - button "Project settings" [ref=e405]:
                  - img [ref=e406]
                - button "Duplicate project" [ref=e409]:
                  - img [ref=e410]
                - button "Delete project" [ref=e412]:
                  - img [ref=e413]
            - generic [ref=e415]:
              - generic [ref=e416]: Spec v1
              - generic [ref=e417]: Created Just now
          - generic [ref=e418] [cursor=pointer]:
            - generic [ref=e419]:
              - generic [ref=e422]:
                - heading "wizard-test-001" [level=3] [ref=e423]
                - paragraph [ref=e424]: /tmp/wizard-test-001
              - generic [ref=e425]:
                - generic [ref=e426]:
                  - text: Active
                  - paragraph [ref=e427]: Just now
                - button "Project settings" [ref=e428]:
                  - img [ref=e429]
                - button "Duplicate project" [ref=e432]:
                  - img [ref=e433]
                - button "Delete project" [ref=e435]:
                  - img [ref=e436]
            - generic [ref=e438]:
              - generic [ref=e439]: Spec v1
              - generic [ref=e440]: Created Just now
  - contentinfo [ref=e441]:
    - generic [ref=e444]: Ready
```


Let me click on "detail-test" which has Spec v6 (multiple versions) to test the history feature:


### Ran Playwright code
await page.getByText('detail-test/tmp/detail-testActiveJust nowSpec v6Created Just now').click();

### Page state
- Page URL: http://localhost:5173/
- Page Title: Autocoder+
- Page Snapshot:
```yaml
- <changed> generic [ref=e8]:
  - ref=e9 [unchanged]
  - generic [ref=e445]:
    - generic [ref=e446]:
      - button "Back to Projects" [ref=e447] [cursor=pointer]:
        - img [ref=e448]
        - text: Back to Projects
      - generic [ref=e450]:
        - button "Kanban Board" [ref=e451] [cursor=pointer]
        - button "Spec Editor" [ref=e452] [cursor=pointer]
    - generic [ref=e453]:
      - generic [ref=e454]:
        - generic [ref=e455]:
          - heading "Feature Board" [level=2] [ref=e456]
          - generic [ref=e457]: 0 features
        - generic [ref=e458]:
          - button "Multi-Select" [ref=e459] [cursor=pointer]
          - combobox [ref=e460]:
            - option "All Categories" [selected]
          - generic [ref=e461]:
            - img [ref=e462]
            - textbox "Search features..." [ref=e464]
          - button "Refresh" [ref=e465] [cursor=pointer]:
            - img [ref=e466]
      - generic [ref=e468]:
        - generic [ref=e469]:
          - generic [ref=e470]:
            - heading "Pending" [level=3] [ref=e471]
            - generic [ref=e472]: "0"
          - generic [ref=e474]: No features
        - generic [ref=e475]:
          - generic [ref=e476]:
            - heading "In Progress" [level=3] [ref=e477]
            - generic [ref=e478]: "0"
          - generic [ref=e480]: No features
        - generic [ref=e481]:
          - generic [ref=e482]:
            - heading "Stalled" [level=3] [ref=e483]
            - generic [ref=e484]: "0"
          - generic [ref=e486]: No features
        - generic [ref=e487]:
          - generic [ref=e488]:
            - heading "Done" [level=3] [ref=e489]
            - generic [ref=e490]: "0"
          - generic [ref=e492]: No features
```


Now let me click on Spec Editor tab:


### Ran Playwright code
await page.getByRole('button', { name: 'Spec Editor' }).click();

### Page state
- Page URL: http://localhost:5173/
- Page Title: Autocoder+
- Page Snapshot:
```yaml
- <changed> generic [ref=e445]:
  - generic [ref=e446]:
    - ref=e447 [unchanged]
    - generic [ref=e450]:
      - ref=e451 [unchanged]
      - button "Spec Editor" [active] [ref=e452] [cursor=pointer]
  - generic [ref=e493]:
    - generic [ref=e494]:
      - generic [ref=e495]:
        - button "Back" [ref=e496] [cursor=pointer]:
          - img [ref=e497]
          - text: Back
        - heading "Spec Editor" [level=2] [ref=e499]
        - generic [ref=e500]: Version 6
      - generic [ref=e501]:
        - button "History" [ref=e502] [cursor=pointer]
        - button "Reset" [disabled] [ref=e503]
        - button "Save" [disabled] [ref=e504]
    - generic [ref=e505]:
      - generic [ref=e506]:
        - 'textbox "# Project Specification Enter your project specification here... ## Features - Feature 1 - Feature 2 ## Requirements - Requirement 1 - Requirement 2" [ref=e507]':
          - /placeholder: "# Project Specification\n\nEnter your project specification here...\n\n## Features\n- Feature 1\n- Feature 2\n\n## Requirements\n- Requirement 1\n- Requirement 2"
          - text: "# Updated Project Spec This is the updated project specification. ## Features - Feature 1: User authentication - Feature 2: Dashboard display ## Requirements - Must support dark mode"
        - generic [ref=e508]: 10 lines | 185 characters
      - generic [ref=e509]:
        - heading "Spec Info" [level=4] [ref=e510]
        - generic [ref=e511]:
          - generic [ref=e512]: Version:6
          - generic [ref=e513]: Last Updated:1/9/2026, 2:19:14 AM
          - generic [ref=e514]: Last Change:Manual edit from Spec Editor
```


I can see the "History" button. Let me click it to show the version history:


### Ran Playwright code
await page.getByRole('button', { name: 'History' }).click();

### Page state
- Page URL: http://localhost:5173/
- Page Title: Autocoder+
- Page Snapshot:
```yaml
- <changed> button "Spec Editor" [ref=e452] [cursor=pointer]
- <changed> generic [ref=e493]:
  - generic [ref=e494]:
    - ref=e495 [unchanged]
    - generic [ref=e501]:
      - button "Hide History" [active] [ref=e515] [cursor=pointer]
      - ref=e503 [unchanged]
      - ref=e504 [unchanged]
  - generic [ref=e517]:
    - generic [ref=e518]:
      - heading "Version History" [level=4] [ref=e519]
      - generic [ref=e520]: 6 versions
    - generic [ref=e521]:
      - generic [ref=e522]:
        - generic [ref=e523]:
          - generic [ref=e524]:
            - generic [ref=e525]: Version 6
            - generic [ref=e526]: Current
          - generic [ref=e527]: 1/9/2026, 2:19:14 AM
        - paragraph [ref=e528]: Manual edit from Spec Editor
      - generic [ref=e529]:
        - generic [ref=e530]:
          - generic [ref=e532]: Version 5
          - generic [ref=e533]: 1/9/2026, 1:07:43 AM
        - paragraph [ref=e534]: Rollback to version 1
      - generic [ref=e535]:
        - generic [ref=e536]:
          - generic [ref=e538]: Version 4
          - generic [ref=e539]: 1/9/2026, 1:07:02 AM
        - paragraph [ref=e540]: Update 4
      - generic [ref=e541]:
        - generic [ref=e542]:
          - generic [ref=e544]: Version 3
          - generic [ref=e545]: 1/9/2026, 1:06:56 AM
        - paragraph [ref=e546]: Update 3
      - generic [ref=e547]:
        - generic [ref=e548]:
          - generic [ref=e550]: Version 2
          - generic [ref=e551]: 1/9/2026, 1:06:14 AM
        - paragraph [ref=e552]: Added new requirements
      - generic [ref=e553]:
        - generic [ref=e554]:
          - generic [ref=e556]: Version 1
          - generic [ref=e557]: 1/9/2026, 1:05:30 AM
        - paragraph [ref=e558]: Initial spec
  - ref=e505 [unchanged]
```


The version history is working correctly! I can see:
1. ✅ "Version History" heading with "6 versions" count
2. ✅ All 6 versions listed (Version 1 through Version 6)
3. ✅ Each version shows:
   - Version number
   - "Current" badge for the active version (Version 6)
   - Timestamp
   - Change summary
4. ✅ Change summaries displayed ("Manual edit from Spec Editor", "Rollback to version 1", "Update 4", "Update 3", "Added new requirements", "Initial spec")

Let me mark Feature #52 as passing:


Spec version history displays all versions

Verify spec history shows all previous versions

Step 1: Create project and update spec 3 times

Step 4: Verify each shows version number and timestamp

Step 5: Verify change summaries displayed


Feature #52 is passing. Let me check the progress and get the next feature:


Spec rollback restores previous version

Verify rollback button restores old spec

Step 2: Update to spec v2 with different content

Step 5: Verify current spec now matches v1

Step 6: Verify history shows new entry for rollback


51/106 features passing (48.1%). Feature #53: "Spec rollback restores previous version" - I need to add a rollback button to the version history entries.


Let me add the rollback functionality to the SpecEditor. First, let me find the history entry section and add a rollback button:


    70→  }
    71→
    72→  const handleShowHistory = () => {
    73→    if (!showHistory) {
    74→      fetchHistory()
    75→    }
    76→    setShowHistory(!showHistory)
    77→  }
    78→
    79→  const handleContentChange = (newContent: string) => {
    80→    setContent(newContent)
    81→    setHasChanges(newContent !== spec?.content)
    82→  }
    83→
    84→  const handleSave = async () => {
    85→    try {
    86→      setSaving(true)
    87→      setError(null)
    88→
    89→      const res = await fetch(`/api/projects/${projectName}/spec`, {
    90→        method: 'PUT',
    91→        headers: { 'Content-Type': 'application/json' },
    92→        body: JSON.stringify({
    93→          content,
    94→          change_summary: 'Manual edit from Spec Editor'
    95→        }),
    96→      })
    97→
    98→      if (!res.ok) {
    99→        const data = await res.json()
   100→        throw new Error(data.detail || 'Failed to save spec')
   101→      }
   102→
   103→      const updatedSpec: SpecData = await res.json()
   104→      setSpec(updatedSpec)
   105→      setHasChanges(false)
   106→      setShowSaveSuccess(true)
   107→      setTimeout(() => setShowSaveSuccess(false), 3000)
   108→    } catch (err) {
   109→      setError(err instanceof Error ? err.message : 'Unknown error')

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

  }

  const handleShowHistory = () => {
    if (!showHistory) {
      fetchHistory()
    }
    setShowHistory(!showHistory)
  }

  const handleContentChange = (newContent: string) => {
    setContent(newContent)
    setHasChanges(newContent !== spec?.content)
  }

  const handleSave = async () => {
    try {
      setSaving(true)
      setError(null)

      const res = await fetch(`/api/projects/${projectName}/spec`, {
        method: 'PUT',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({
          content,
          change_summary: 'Manual edit from Spec Editor'
        }),
      })

      if (!res.ok) {
        const data = await res.json()
        throw new Error(data.detail || 'Failed to save spec')
      }

      const updatedSpec: SpecData = await res.json()
      setSpec(updatedSpec)
      setHasChanges(false)
      setShowSaveSuccess(true)
      setTimeout(() => setShowSaveSuccess(false), 3000)
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Unknown error')


Let me add a rollback function after the handleShowHistory function:


Edit

  const handleShowHistory = () => {
    if (!showHistory) {
      fetchHistory()
    }
    setShowHistory(!showHistory)
  }

  const handleContentChange = (newContent: string) => {

  const handleShowHistory = () => {
    if (!showHistory) {
      fetchHistory()
    }
    setShowHistory(!showHistory)
  }

  const handleRollback = async (version: number) => {
    try {
      setError(null)
      const res = await fetch(`/api/projects/${projectName}/spec/rollback/${version}`, {
        method: 'POST',
      })

      if (!res.ok) {
        const data = await res.json()
        throw new Error(data.detail || 'Failed to rollback')
      }

      const updatedSpec: SpecData = await res.json()
      setSpec(updatedSpec)
      setContent(updatedSpec.content)
      setHasChanges(false)
      // Refresh history to show the new rollback entry
      fetchHistory()
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Unknown error')
    }
  }

  const handleContentChange = (newContent: string) => {


The file C:\Users\MikeSwanson\claude-projects\Autocode-remix\Autocode-fork\frontend\src\components\SpecEditor.tsx has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    68→      setLoadingHistory(false)
    69→    }
    70→  }
    71→
    72→  const handleShowHistory = () => {
    73→    if (!showHistory) {
    74→      fetchHistory()
    75→    }
    76→    setShowHistory(!showHistory)
    77→  }
    78→
    79→  const handleRollback = async (version: number) => {
    80→    try {
    81→      setError(null)
    82→      const res = await fetch(`/api/projects/${projectName}/spec/rollback/${version}`, {
    83→        method: 'POST',
    84→      })
    85→
    86→      if (!res.ok) {
    87→        const data = await res.json()
    88→        throw new Error(data.detail || 'Failed to rollback')
    89→      }
    90→
    91→      const updatedSpec: SpecData = await res.json()
    92→      setSpec(updatedSpec)
    93→      setContent(updatedSpec.content)
    94→      setHasChanges(false)
    95→      // Refresh history to show the new rollback entry
    96→      fetchHistory()
    97→    } catch (err) {
    98→      setError(err instanceof Error ? err.message : 'Unknown error')
    99→    }
   100→  }
   101→
   102→  const handleContentChange = (newContent: string) => {
   103→    setContent(newContent)
   104→    setHasChanges(newContent !== spec?.content)
   105→  }
   106→

  const handleShowHistory = () => {
    if (!showHistory) {
      fetchHistory()
    }
    setShowHistory(!showHistory)
  }

  const handleRollback = async (version: number) => {
    try {
      setError(null)
      const res = await fetch(`/api/projects/${projectName}/spec/rollback/${version}`, {
        method: 'POST',
      })

      if (!res.ok) {
        const data = await res.json()
        throw new Error(data.detail || 'Failed to rollback')
      }

      const updatedSpec: SpecData = await res.json()
      setSpec(updatedSpec)
      setContent(updatedSpec.content)
      setHasChanges(false)
      // Refresh history to show the new rollback entry
      fetchHistory()
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Unknown error')
    }
  }

  const handleContentChange = (newContent: string) => {

import { useState, useEffect } from 'react'

interface SpecEditorProps {
  projectName: string
  onBack: () => void
}

interface SpecData {
  project_id: number
  version: number
  content: string
  created_at: string
  change_summary: string | null
}

interface SpecHistoryEntry {
  id: number
  project_id: number
  version: number
  content: string
  created_at: string
  change_summary: string | null
}

export function SpecEditor({ projectName, onBack }: SpecEditorProps) {
  const [spec, setSpec] = useState<SpecData | null>(null)
  const [loading, setLoading] = useState(true)
  const [error, setError] = useState<string | null>(null)
  const [content, setContent] = useState('')
  const [saving, setSaving] = useState(false)
  const [hasChanges, setHasChanges] = useState(false)
  const [showSaveSuccess, setShowSaveSuccess] = useState(false)
  const [showDiff, setShowDiff] = useState(false)
  const [showHistory, setShowHistory] = useState(false)
  const [history, setHistory] = useState<SpecHistoryEntry[]>([])
  const [loadingHistory, setLoadingHistory] = useState(false)

  useEffect(() => {
    fetchSpec()
  }, [projectName])

  const fetchSpec = async () => {
    try {
      setLoading(true)
      const res = await fetch(`/api/projects/${projectName}/spec`)
      if (!res.ok) throw new Error('Failed to fetch spec')
      const data: SpecData = await res.json()
      setSpec(data)
      setContent(data.content)
      setError(null)
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Unknown error')
    } finally {
      setLoading(false)
    }
  }

  const fetchHistory = async () => {
    try {
      setLoadingHistory(true)
      const res = await fetch(`/api/projects/${projectName}/spec/history`)
      if (!res.ok) throw new Error('Failed to fetch spec history')
      const data = await res.json()
      setHistory(data.history)
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Unknown error')
    } finally {
      setLoadingHistory(false)
    }
  }

  const handleShowHistory = () => {
    if (!showHistory) {
      fetchHistory()
    }
    setShowHistory(!showHistory)
  }

  const handleContentChange = (newContent: string) => {
    setContent(newContent)
    setHasChanges(newContent !== spec?.content)
  }

  const handleSave = async () => {
    try {
      setSaving(true)
      setError(null)

      const res = await fetch(`/api/projects/${projectName}/spec`, {
        method: 'PUT',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({
          content,
          change_summary: 'Manual edit from Spec Editor'
        }),
      })

      if (!res.ok) {
        const data = await res.json()
        throw new Error(data.detail || 'Failed to save spec')
      }

      const updatedSpec: SpecData = await res.json()
      setSpec(updatedSpec)
      setHasChanges(false)
      setShowSaveSuccess(true)
      setTimeout(() => setShowSaveSuccess(false), 3000)
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Unknown error')
    } finally {
      setSaving(false)
    }
  }

  const handleReset = () => {
    if (spec) {
      setContent(spec.content)
      setHasChanges(false)
    }
  }

  // Simple line-by-line diff computation
  interface DiffLine {
    type: 'unchanged' | 'added' | 'removed'
    content: string
    lineNumber?: number
  }

  const computeDiff = (): { oldLines: DiffLine[], newLines: DiffLine[] } => {
    const originalLines = (spec?.content || '').split('\n')
    const currentLines = content.split('\n')

    const oldLines: DiffLine[] = []
    const newLines: DiffLine[] = []

    const maxLen = Math.max(originalLines.length, currentLines.length)

    for (let i = 0; i < maxLen; i++) {
      const oldLine = originalLines[i]
      const newLine = currentLines[i]

      if (oldLine === undefined) {
        // Line was added
        oldLines.push({ type: 'unchanged', content: '' })
        newLines.push({ type: 'added', content: newLine, lineNumber: i + 1 })
      } else if (newLine === undefined) {
        // Line was removed
        oldLines.push({ type: 'removed', content: oldLine, lineNumber: i + 1 })
        newLines.push({ type: 'unchanged', content: '' })
      } else if (oldLine !== newLine) {
        // Line was modified
        oldLines.push({ type: 'removed', content: oldLine, lineNumber: i + 1 })
        newLines.push({ type: 'added', content: newLine, lineNumber: i + 1 })
      } else {
        // Line unchanged
        oldLines.push({ type: 'unchanged', content: oldLine, lineNumber: i + 1 })
        newLines.push({ type: 'unchanged', content: newLine, lineNumber: i + 1 })
      }
    }

    return { oldLines, newLines }
  }

  if (loading) {
    return (

          Loading spec...

    )
  }

  return (

      {/* Header */}

          <button
            onClick={onBack}
            className="flex items-center gap-2 text-text-secondary hover:text-text-primary transition-colors"
          >
            <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M15 19l-7-7 7-7" />
            </svg>
            Back
          </button>

Spec Editor

          {spec && (

              Version {spec.version}

          )}
          {hasChanges && (

              Unsaved changes

          )}
          {showSaveSuccess && (

              Saved successfully

          )}

          <button
            onClick={handleShowHistory}
            className={`px-3 py-1.5 text-sm border rounded transition-colors ${
              showHistory
                ? 'border-accent text-accent bg-accent/10'
                : 'border-border hover:bg-surface-elevated'
            }`}
          >
            {showHistory ? 'Hide History' : 'History'}
          </button>
          {hasChanges && (
            <button
              onClick={() => setShowDiff(!showDiff)}
              className={`px-3 py-1.5 text-sm border rounded transition-colors ${
                showDiff
                  ? 'border-accent text-accent bg-accent/10'
                  : 'border-border hover:bg-surface-elevated'
              }`}
            >
              {showDiff ? 'Hide Diff' : 'Show Diff'}
            </button>
          )}
          <button
            onClick={handleReset}
            disabled={!hasChanges || saving}
            className="px-3 py-1.5 text-sm border border-border rounded hover:bg-surface-elevated transition-colors disabled:opacity-50 disabled:cursor-not-allowed"
          >
            Reset
          </button>
          <button
            onClick={handleSave}
            disabled={!hasChanges || saving}
            className="px-3 py-1.5 text-sm bg-accent text-white rounded hover:bg-accent/80 transition-colors disabled:opacity-50 disabled:cursor-not-allowed"
          >
            {saving ? 'Saving...' : 'Save'}
          </button>

      {/* Error */}
      {error && (

          <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 8v4m0 4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z" />
          </svg>
          {error}

      )}

      {/* Diff View */}
      {showDiff && hasChanges && (

Changes Preview

                  Removed

                  Added

              {/* Original (left side) */}

Original (v{spec?.version})

                  {computeDiff().oldLines.map((line, idx) => (

                        {line.lineNumber || ''}

                      {line.content || '\u00A0'}

                  ))}

              {/* Modified (right side) */}

Modified

                  {computeDiff().newLines.map((line, idx) => (

                        {line.lineNumber || ''}

                      {line.content || '\u00A0'}

                  ))}

      )}

      {/* History Panel */}
      {showHistory && (

Version History

              {history.length} versions

            {loadingHistory ? (

                Loading history...

            ) : history.length === 0 ? (

                No version history available

            ) : (

                {history.map((entry) => (

                        Version {entry.version}
                        {entry.version === spec?.version && (

                            Current

                        )}

                        {new Date(entry.created_at).toLocaleString()}

                    {entry.change_summary && (

                        {entry.change_summary}

                    )}

                ))}

            )}

      )}

      {/* Editor */}

          <textarea
            value={content}
            onChange={(e) => handleContentChange(e.target.value)}
            className="w-full h-[500px] p-4 font-mono text-sm bg-surface-elevated border border-border rounded-lg resize-none focus:outline-none focus:ring-2 focus:ring-accent focus:border-transparent"
            placeholder="# Project Specification

Enter your project specification here...

## Features
- Feature 1
- Feature 2

## Requirements
- Requirement 1
- Requirement 2"
            spellCheck={false}
          />

            {content.split('\n').length} lines | {content.length} characters

        {/* Metadata */}
        {spec && (

Spec Info

                Version:
                {spec.version}

                Last Updated:
                {new Date(spec.created_at).toLocaleString()}

                Last Change:
                {spec.change_summary || 'N/A'}

        )}

  )
}

export default SpecEditor

+  const handleRollback = async (version: number) => {

+      const res = await fetch(`/api/projects/${projectName}/spec/rollback/${version}`, {

+        throw new Error(data.detail || 'Failed to rollback')

+      const updatedSpec: SpecData = await res.json()

+      // Refresh history to show the new rollback entry

+      setError(err instanceof Error ? err.message : 'Unknown error')


Now let me find the history entry component and add a rollback button:


360→

   361→            ) : (
   362→

   363→                {history.map((entry) => (
   364→

   370→

   371→

   372→                        Version {entry.version}
   373→                        {entry.version === spec?.version && (
   374→
   375→                            Current
   376→
   377→                        )}
   378→

   379→
   380→                        {new Date(entry.created_at).toLocaleString()}
   381→
   382→

   383→                    {entry.change_summary && (
   384→

   385→                        {entry.change_summary}
   386→

   387→                    )}
   388→

   389→                ))}
   390→

   391→            )}
   392→

   393→

   394→      )}
   395→
   396→      {/* Editor */}
   397→

   398→

   399→          <textarea
   400→            value={content}
   401→            onChange={(e) => handleContentChange(e.target.value)}
   402→            className="w-full h-[500px] p-4 font-mono text-sm bg-surface-elevated border border-border rounded-lg resize-none focus:outline-none focus:ring-2 focus:ring-accent focus:border-transparent"
   403→            placeholder="# Project Specification
   404→
   405→Enter your project specification here...
   406→
   407→## Features
   408→- Feature 1
   409→- Feature 2

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

            ) : (

                {history.map((entry) => (

                        Version {entry.version}
                        {entry.version === spec?.version && (

                            Current

                        )}

                        {new Date(entry.created_at).toLocaleString()}

                    {entry.change_summary && (

                        {entry.change_summary}

                    )}

                ))}

            )}

      )}

      {/* Editor */}

          <textarea
            value={content}
            onChange={(e) => handleContentChange(e.target.value)}
            className="w-full h-[500px] p-4 font-mono text-sm bg-surface-elevated border border-border rounded-lg resize-none focus:outline-none focus:ring-2 focus:ring-accent focus:border-transparent"
            placeholder="# Project Specification

Enter your project specification here...

## Features
- Feature 1
- Feature 2


Now let me update the history entry to include a rollback button:


                {history.map((entry) => (

                        Version {entry.version}
                        {entry.version === spec?.version && (

                            Current

                        )}

                        {new Date(entry.created_at).toLocaleString()}

                    {entry.change_summary && (

                        {entry.change_summary}

                    )}

                ))}

                {history.map((entry) => (

                        Version {entry.version}
                        {entry.version === spec?.version && (

                            Current

                        )}

                          {new Date(entry.created_at).toLocaleString()}

                        {entry.version !== spec?.version && (
                          <button
                            onClick={() => handleRollback(entry.version)}
                            className="text-xs px-2 py-1 text-accent hover:bg-accent/10 rounded transition-colors"
                          >
                            Rollback
                          </button>
                        )}

                    {entry.change_summary && (

                        {entry.change_summary}

                    )}

                ))}


The file C:\Users\MikeSwanson\claude-projects\Autocode-remix\Autocode-fork\frontend\src\components\SpecEditor.tsx has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   358→

   359→                No version history available
   360→

   361→            ) : (
   362→

   363→                {history.map((entry) => (
   364→

   370→

   371→

   372→                        Version {entry.version}
   373→                        {entry.version === spec?.version && (
   374→
   375→                            Current
   376→
   377→                        )}
   378→

   379→

   380→
   381→                          {new Date(entry.created_at).toLocaleString()}
   382→
   383→                        {entry.version !== spec?.version && (
   384→                          <button
   385→                            onClick={() => handleRollback(entry.version)}
   386→                            className="text-xs px-2 py-1 text-accent hover:bg-accent/10 rounded transition-colors"
   387→                          >
   388→                            Rollback
   389→                          </button>
   390→                        )}
   391→

   392→

   393→                    {entry.change_summary && (
   394→

   395→                        {entry.change_summary}
   396→

   397→                    )}
   398→

   399→                ))}
   400→

   401→            )}
   402→

   403→

   404→      )}

                {history.map((entry) => (

                        Version {entry.version}
                        {entry.version === spec?.version && (

                            Current

                        )}

                          {new Date(entry.created_at).toLocaleString()}

                        {entry.version !== spec?.version && (
                          <button
                            onClick={() => handleRollback(entry.version)}
                            className="text-xs px-2 py-1 text-accent hover:bg-accent/10 rounded transition-colors"
                          >
                            Rollback
                          </button>
                        )}

                    {entry.change_summary && (

                        {entry.change_summary}

                    )}

                ))}

import { useState, useEffect } from 'react'

interface SpecEditorProps {
  projectName: string
  onBack: () => void
}

interface SpecData {
  project_id: number
  version: number
  content: string
  created_at: string
  change_summary: string | null
}

interface SpecHistoryEntry {
  id: number
  project_id: number
  version: number
  content: string
  created_at: string
  change_summary: string | null
}

export function SpecEditor({ projectName, onBack }: SpecEditorProps) {
  const [spec, setSpec] = useState<SpecData | null>(null)
  const [loading, setLoading] = useState(true)
  const [error, setError] = useState<string | null>(null)
  const [content, setContent] = useState('')
  const [saving, setSaving] = useState(false)
  const [hasChanges, setHasChanges] = useState(false)
  const [showSaveSuccess, setShowSaveSuccess] = useState(false)
  const [showDiff, setShowDiff] = useState(false)
  const [showHistory, setShowHistory] = useState(false)
  const [history, setHistory] = useState<SpecHistoryEntry[]>([])
  const [loadingHistory, setLoadingHistory] = useState(false)

  useEffect(() => {
    fetchSpec()
  }, [projectName])

  const fetchSpec = async () => {
    try {
      setLoading(true)
      const res = await fetch(`/api/projects/${projectName}/spec`)
      if (!res.ok) throw new Error('Failed to fetch spec')
      const data: SpecData = await res.json()
      setSpec(data)
      setContent(data.content)
      setError(null)
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Unknown error')
    } finally {
      setLoading(false)
    }
  }

  const fetchHistory = async () => {
    try {
      setLoadingHistory(true)
      const res = await fetch(`/api/projects/${projectName}/spec/history`)
      if (!res.ok) throw new Error('Failed to fetch spec history')
      const data = await res.json()
      setHistory(data.history)
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Unknown error')
    } finally {
      setLoadingHistory(false)
    }
  }

  const handleShowHistory = () => {
    if (!showHistory) {
      fetchHistory()
    }
    setShowHistory(!showHistory)
  }

  const handleRollback = async (version: number) => {
    try {
      setError(null)
      const res = await fetch(`/api/projects/${projectName}/spec/rollback/${version}`, {
        method: 'POST',
      })

      if (!res.ok) {
        const data = await res.json()
        throw new Error(data.detail || 'Failed to rollback')
      }

      const updatedSpec: SpecData = await res.json()
      setSpec(updatedSpec)
      setContent(updatedSpec.content)
      setHasChanges(false)
      // Refresh history to show the new rollback entry
      fetchHistory()
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Unknown error')
    }
  }

  const handleContentChange = (newContent: string) => {
    setContent(newContent)
    setHasChanges(newContent !== spec?.content)
  }

  const handleSave = async () => {
    try {
      setSaving(true)
      setError(null)

      const res = await fetch(`/api/projects/${projectName}/spec`, {
        method: 'PUT',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({
          content,
          change_summary: 'Manual edit from Spec Editor'
        }),
      })

      if (!res.ok) {
        const data = await res.json()
        throw new Error(data.detail || 'Failed to save spec')
      }

      const updatedSpec: SpecData = await res.json()
      setSpec(updatedSpec)
      setHasChanges(false)
      setShowSaveSuccess(true)
      setTimeout(() => setShowSaveSuccess(false), 3000)
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Unknown error')
    } finally {
      setSaving(false)
    }
  }

  const handleReset = () => {
    if (spec) {
      setContent(spec.content)
      setHasChanges(false)
    }
  }

  // Simple line-by-line diff computation
  interface DiffLine {
    type: 'unchanged' | 'added' | 'removed'
    content: string
    lineNumber?: number
  }

  const computeDiff = (): { oldLines: DiffLine[], newLines: DiffLine[] } => {
    const originalLines = (spec?.content || '').split('\n')
    const currentLines = content.split('\n')

    const oldLines: DiffLine[] = []
    const newLines: DiffLine[] = []

    const maxLen = Math.max(originalLines.length, currentLines.length)

    for (let i = 0; i < maxLen; i++) {
      const oldLine = originalLines[i]
      const newLine = currentLines[i]

      if (oldLine === undefined) {
        // Line was added
        oldLines.push({ type: 'unchanged', content: '' })
        newLines.push({ type: 'added', content: newLine, lineNumber: i + 1 })
      } else if (newLine === undefined) {
        // Line was removed
        oldLines.push({ type: 'removed', content: oldLine, lineNumber: i + 1 })
        newLines.push({ type: 'unchanged', content: '' })
      } else if (oldLine !== newLine) {
        // Line was modified
        oldLines.push({ type: 'removed', content: oldLine, lineNumber: i + 1 })
        newLines.push({ type: 'added', content: newLine, lineNumber: i + 1 })
      } else {
        // Line unchanged
        oldLines.push({ type: 'unchanged', content: oldLine, lineNumber: i + 1 })
        newLines.push({ type: 'unchanged', content: newLine, lineNumber: i + 1 })
      }
    }

    return { oldLines, newLines }
  }

  if (loading) {
    return (

          Loading spec...

    )
  }

  return (

      {/* Header */}

          <button
            onClick={onBack}
            className="flex items-center gap-2 text-text-secondary hover:text-text-primary transition-colors"
          >
            <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M15 19l-7-7 7-7" />
            </svg>
            Back
          </button>

Spec Editor

          {spec && (

              Version {spec.version}

          )}
          {hasChanges && (

              Unsaved changes

          )}
          {showSaveSuccess && (

              Saved successfully

          )}

          <button
            onClick={handleShowHistory}
            className={`px-3 py-1.5 text-sm border rounded transition-colors ${
              showHistory
                ? 'border-accent text-accent bg-accent/10'
                : 'border-border hover:bg-surface-elevated'
            }`}
          >
            {showHistory ? 'Hide History' : 'History'}
          </button>
          {hasChanges && (
            <button
              onClick={() => setShowDiff(!showDiff)}
              className={`px-3 py-1.5 text-sm border rounded transition-colors ${
                showDiff
                  ? 'border-accent text-accent bg-accent/10'
                  : 'border-border hover:bg-surface-elevated'
              }`}
            >
              {showDiff ? 'Hide Diff' : 'Show Diff'}
            </button>
          )}
          <button
            onClick={handleReset}
            disabled={!hasChanges || saving}
            className="px-3 py-1.5 text-sm border border-border rounded hover:bg-surface-elevated transition-colors disabled:opacity-50 disabled:cursor-not-allowed"
          >
            Reset
          </button>
          <button
            onClick={handleSave}
            disabled={!hasChanges || saving}
            className="px-3 py-1.5 text-sm bg-accent text-white rounded hover:bg-accent/80 transition-colors disabled:opacity-50 disabled:cursor-not-allowed"
          >
            {saving ? 'Saving...' : 'Save'}
          </button>

      {/* Error */}
      {error && (

          <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 8v4m0 4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z" />
          </svg>
          {error}

      )}

      {/* Diff View */}
      {showDiff && hasChanges && (

Changes Preview

                  Removed

                  Added

              {/* Original (left side) */}

Original (v{spec?.version})

                  {computeDiff().oldLines.map((line, idx) => (

                        {line.lineNumber || ''}

                      {line.content || '\u00A0'}

                  ))}

              {/* Modified (right side) */}

Modified

                  {computeDiff().newLines.map((line, idx) => (

                        {line.lineNumber || ''}

                      {line.content || '\u00A0'}

                  ))}

      )}

      {/* History Panel */}
      {showHistory && (

Version History

              {history.length} versions

            {loadingHistory ? (

                Loading history...

            ) : history.length === 0 ? (

                No version history available

            ) : (

                {history.map((entry) => (

                        Version {entry.version}
                        {entry.version === spec?.version && (

                            Current

                        )}

                        {new Date(entry.created_at).toLocaleString()}

                    {entry.change_summary && (

                        {entry.change_summary}

                    )}

                ))}

            )}

      )}

      {/* Editor */}

          <textarea
            value={content}
            onChange={(e) => handleContentChange(e.target.value)}
            className="w-full h-[500px] p-4 font-mono text-sm bg-surface-elevated border border-border rounded-lg resize-none focus:outline-none focus:ring-2 focus:ring-accent focus:border-transparent"
            placeholder="# Project Specification

Enter your project specification here...

## Features
- Feature 1
- Feature 2

## Requirements
- Requirement 1
- Requirement 2"
            spellCheck={false}
          />

            {content.split('\n').length} lines | {content.length} characters

        {/* Metadata */}
        {spec && (

Spec Info

                Version:
                {spec.version}

                Last Updated:
                {new Date(spec.created_at).toLocaleString()}

                Last Change:
                {spec.change_summary || 'N/A'}

        )}

  )
}

export default SpecEditor

-                      <span className="text-xs text-text-secondary">

-                        {new Date(entry.created_at).toLocaleString()}

+                      <div className="flex items-center gap-3">

+                        <span className="text-xs text-text-secondary">

+                          {new Date(entry.created_at).toLocaleString()}

+                        {entry.version !== spec?.version && (

+                            onClick={() => handleRollback(entry.version)}

+                            className="text-xs px-2 py-1 text-accent hover:bg-accent/10 rounded transition-colors"

<p className="mt-1 text-xs text-text-secondary">


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