[Config] Add coding guidelines and code-fixer agent

Major additions:
- Add CODING_GUIDELINES.md with "NO EMOJIS" rule
- Create code-fixer agent for automated violation fixes
- Add offline mode v2 hooks with local caching/queue
- Add periodic context save with invisible Task Scheduler setup
- Add agent coordination rules and database connection docs

Infrastructure:
- Update hooks: task-complete-v2, user-prompt-submit-v2
- Add periodic_save_check.py for auto-save every 5min
- Add PowerShell scripts: setup_periodic_save.ps1, update_to_invisible.ps1
- Add sync-contexts script for queue synchronization

Documentation:
- OFFLINE_MODE.md, PERIODIC_SAVE_INVISIBLE_SETUP.md
- Migration procedures and verification docs
- Fix flashing window guide

Updates:
- Update agent configs (backup, code-review, coding, database, gitea, testing)
- Update claude.md with coding guidelines reference
- Update .gitignore for new cache/queue directories

Status: Pre-automated-fixer baseline commit

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

COPY_PASTE_MIGRATION.txt

@@ -0,0 +1,111 @@
+================================================================================
+DATA MIGRATION - COPY/PASTE COMMANDS
+================================================================================
+
+Step 1: Open PuTTY and connect to Jupiter (172.16.3.20)
+------------------------------------------------------------------------
+
+Copy and paste this entire block:
+
+docker exec mariadb mysqldump \
+  -u claudetools \
+  -pCT_e8fcd5a3952030a79ed6debae6c954ed \
+  --no-create-info \
+  --skip-add-drop-table \
+  --insert-ignore \
+  --complete-insert \
+  claudetools | \
+ssh guru@172.16.3.30 "mysql -u claudetools -pCT_e8fcd5a3952030a79ed6debae6c954ed -D claudetools"
+
+Press Enter and wait (should complete in 5-10 seconds)
+
+Expected output: (nothing = success, or some INSERT statements scrolling by)
+
+
+Step 2: Verify the migration succeeded
+------------------------------------------------------------------------
+
+Open another PuTTY window and connect to RMM (172.16.3.30)
+
+Copy and paste this:
+
+mysql -u claudetools -pCT_e8fcd5a3952030a79ed6debae6c954ed -D claudetools -e "SELECT TABLE_NAME, TABLE_ROWS FROM information_schema.TABLES WHERE TABLE_SCHEMA='claudetools' AND TABLE_ROWS > 0 ORDER BY TABLE_ROWS DESC;"
+
+Expected output:
+TABLE_NAME                  TABLE_ROWS
+conversation_contexts       68
+(possibly other tables with data)
+
+
+Step 3: Test from Windows
+------------------------------------------------------------------------
+
+Open PowerShell or Command Prompt and run:
+
+curl -s http://172.16.3.30:8001/api/conversation-contexts?limit=3
+
+Expected: JSON output with 3 conversation contexts
+
+
+================================================================================
+TROUBLESHOOTING
+================================================================================
+
+If Step 1 asks for a password:
+  - Enter the password for guru@172.16.3.30 when prompted
+
+If Step 1 says "Permission denied":
+  - RMM and Jupiter need SSH keys configured
+  - Alternative: Do it in 3 steps (export, copy, import) - see below
+
+If Step 2 shows 0 rows:
+  - Something went wrong with import
+  - Check for error messages from Step 1
+
+
+================================================================================
+ALTERNATIVE: 3-STEP METHOD (if single command doesn't work)
+================================================================================
+
+On Jupiter (172.16.3.20):
+------------------------------------------------------------------------
+docker exec mariadb mysqldump \
+  -u claudetools \
+  -pCT_e8fcd5a3952030a79ed6debae6c954ed \
+  --no-create-info \
+  --skip-add-drop-table \
+  --insert-ignore \
+  --complete-insert \
+  claudetools > /tmp/data_export.sql
+
+ls -lh /tmp/data_export.sql
+
+Copy this file to RMM:
+------------------------------------------------------------------------
+scp /tmp/data_export.sql guru@172.16.3.30:/tmp/
+
+On RMM (172.16.3.30):
+------------------------------------------------------------------------
+mysql -u claudetools -pCT_e8fcd5a3952030a79ed6debae6c954ed -D claudetools < /tmp/data_export.sql
+
+Verify:
+------------------------------------------------------------------------
+mysql -u claudetools -pCT_e8fcd5a3952030a79ed6debae6c954ed -D claudetools -e "SELECT COUNT(*) as contexts FROM conversation_contexts;"
+
+Should show: contexts = 68 (or more)
+
+
+================================================================================
+QUICK CHECK: Is there data on Jupiter to migrate?
+================================================================================
+
+On Jupiter (172.16.3.20):
+------------------------------------------------------------------------
+docker exec mariadb mysql -u claudetools -pCT_e8fcd5a3952030a79ed6debae6c954ed -D claudetools -e "SELECT COUNT(*) FROM conversation_contexts;"
+
+Should show: 68 (from yesterday's import)
+
+If it shows 0, then there's nothing to migrate!
+
+
+================================================================================