claudetools/CONTEXT_RECALL_MIGRATION_REPORT.md

Context Recall Models Migration Report

Date: 2026-01-16 Migration Revision ID: a0dfb0b4373c Status: SUCCESS

Migration Summary

Successfully generated and applied database migration for Context Recall functionality, adding 4 new tables to the ClaudeTools schema.

Migration Details

• Previous Revision: 48fab1bdfec6 (Initial schema - 38 tables)
• Current Revision: a0dfb0b4373c (head)
• Migration Name: add_context_recall_models
• Database: MariaDB 12.1.2 on 172.16.3.20:3306
• Generated: 2026-01-16 16:51:48

Tables Created

1. conversation_contexts

Purpose: Store conversation context from AI agent sessions

Columns (13):

• id (CHAR 36, PRIMARY KEY)
• session_id (VARCHAR 36, FK -> sessions.id)
• project_id (VARCHAR 36, FK -> projects.id)
• machine_id (VARCHAR 36, FK -> machines.id)
• context_type (VARCHAR 50, NOT NULL)
• title (VARCHAR 200, NOT NULL)
• dense_summary (TEXT)
• key_decisions (TEXT)
• current_state (TEXT)
• tags (TEXT)
• relevance_score (FLOAT, default 1.0)
• created_at (DATETIME)
• updated_at (DATETIME)

Indexes (5):

• idx_conversation_contexts_session (session_id)
• idx_conversation_contexts_project (project_id)
• idx_conversation_contexts_machine (machine_id)
• idx_conversation_contexts_type (context_type)
• idx_conversation_contexts_relevance (relevance_score)

Foreign Keys (3):

• session_id -> sessions.id (SET NULL on delete)
• project_id -> projects.id (SET NULL on delete)
• machine_id -> machines.id (SET NULL on delete)

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2. context_snippets

Purpose: Store reusable context snippets for quick retrieval

Columns (12):

• id (CHAR 36, PRIMARY KEY)
• project_id (VARCHAR 36, FK -> projects.id)
• client_id (VARCHAR 36, FK -> clients.id)
• category (VARCHAR 100, NOT NULL)
• title (VARCHAR 200, NOT NULL)
• dense_content (TEXT, NOT NULL)
• structured_data (TEXT)
• tags (TEXT)
• relevance_score (FLOAT, default 1.0)
• usage_count (INTEGER, default 0)
• created_at (DATETIME)
• updated_at (DATETIME)

Indexes (5):

• idx_context_snippets_project (project_id)
• idx_context_snippets_client (client_id)
• idx_context_snippets_category (category)
• idx_context_snippets_relevance (relevance_score)
• idx_context_snippets_usage (usage_count)

Foreign Keys (2):

• project_id -> projects.id (SET NULL on delete)
• client_id -> clients.id (SET NULL on delete)

---

3. project_states

Purpose: Track current state and progress of projects

Columns (12):

• id (CHAR 36, PRIMARY KEY)
• project_id (VARCHAR 36, FK -> projects.id, UNIQUE)
• last_session_id (VARCHAR 36, FK -> sessions.id)
• current_phase (VARCHAR 100)
• progress_percentage (INTEGER, default 0)
• blockers (TEXT)
• next_actions (TEXT)
• context_summary (TEXT)
• key_files (TEXT)
• important_decisions (TEXT)
• created_at (DATETIME)
• updated_at (DATETIME)

Indexes (4):

• project_id (UNIQUE INDEX on project_id)
• idx_project_states_project (project_id)
• idx_project_states_last_session (last_session_id)
• idx_project_states_progress (progress_percentage)

Foreign Keys (2):

• project_id -> projects.id (CASCADE on delete)
• last_session_id -> sessions.id (SET NULL on delete)

Note: One-to-one relationship with projects table via UNIQUE constraint

---

4. decision_logs

Purpose: Log important decisions made during development

Columns (11):

• id (CHAR 36, PRIMARY KEY)
• project_id (VARCHAR 36, FK -> projects.id)
• session_id (VARCHAR 36, FK -> sessions.id)
• decision_type (VARCHAR 100, NOT NULL)
• impact (VARCHAR 50, default 'medium')
• decision_text (TEXT, NOT NULL)
• rationale (TEXT)
• alternatives_considered (TEXT)
• tags (TEXT)
• created_at (DATETIME)
• updated_at (DATETIME)

Indexes (4):

• idx_decision_logs_project (project_id)
• idx_decision_logs_session (session_id)
• idx_decision_logs_type (decision_type)
• idx_decision_logs_impact (impact)

Foreign Keys (2):

• project_id -> projects.id (SET NULL on delete)
• session_id -> sessions.id (SET NULL on delete)

---

Verification Results

Table Creation

• Expected Tables: 4
• Tables Created: 4
• Status: ✓ SUCCESS

Structure Validation

All tables include:

• ✓ Proper column definitions with correct data types
• ✓ All specified indexes created successfully
• ✓ Foreign key constraints properly configured
• ✓ Automatic timestamp columns (created_at, updated_at)
• ✓ UUID primary keys (CHAR 36)

Basic Operations Test

Tested on conversation_contexts table:

• ✓ INSERT operation successful
• ✓ SELECT operation successful
• ✓ DELETE operation successful
• ✓ Data integrity verified

Migration Files

Migration File:

D:\ClaudeTools\migrations\versions\a0dfb0b4373c_add_context_recall_models.py

Configuration:

D:\ClaudeTools\alembic.ini

Total Schema Statistics

• Total Tables in Database: 42 (38 original + 4 new)
• Total Indexes Added: 18
• Total Foreign Keys Added: 9

Migration History

<base> -> 48fab1bdfec6, Initial schema - 38 tables
48fab1bdfec6 -> a0dfb0b4373c (head), add_context_recall_models

Warnings & Issues

None - Migration completed without warnings or errors.

Next Steps

The Context Recall models are now ready for use:

1. API Integration: Implement CRUD endpoints in FastAPI
2. Service Layer: Create business logic for context retrieval
3. Testing: Add comprehensive unit and integration tests
4. Documentation: Update API documentation with new endpoints

Notes

• All foreign keys use SET NULL on delete except project_states.project_id which uses CASCADE
• This ensures project state is deleted when the associated project is deleted
• Other references remain but are nullified when parent records are deleted
• Relevance scores default to 1.0 for new records
• Usage counts default to 0 for context snippets
• Decision impact defaults to 'medium'
• Progress percentage defaults to 0

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Migration Applied: 2026-01-16 23:53:30 Verification Completed: 2026-01-16 23:53:30 Report Generated: 2026-01-16