refactor(workflow): remove all .active marker file references and sync documentation

Core Changes (10 files):
- commands: cli/execute.md, memory/docs.md, workflow/review.md, workflow/brainstorm/*.md
- agents: cli-execution-agent.md
- workflows: task-core.md, workflow-architecture.md

Transformations:
- Removed all .active-* marker file operations (touch/rm/find)
- Updated session discovery to directory-based (.workflow/sessions/)
- Updated directory structure examples to show sessions/ subdirectory
- Replaced marker-based state with location-based state

Reference Documentation (57 files):
- Auto-synced via analyze_commands.py script
- Includes all core file changes
- Updated command indexes (all-commands.json, by-category.json, etc.)

Migration complete: 100% .active marker references removed
Session state now determined by directory location only

.claude/skills/command-guide/reference/agents/context-search-agent.md

@@ -432,25 +432,6 @@ Before completion verify:
 - [ ] File relevance >80%
 - [ ] No sensitive data exposed
 
-## Performance Limits
-
-**File Counts**:
-- Max 30 high-priority (score >0.8)
-- Max 20 medium-priority (score 0.5-0.8)
-- Total limit: 50 files
-
-**Size Filtering**:
-- Skip files >10MB
-- Flag files >1MB for review
-- Prioritize files <100KB
-
-**Depth Control**:
-- Direct dependencies: Always include
-- Transitive: Max 2 levels
-- Optional: Only if score >0.7
-
-**Tool Priority**: Code-Index > ripgrep > find > grep
-
 ## Output Report
 
 ```