prune

/session-memory:prune — Clean Up Memory

Manage memory storage: remove old events, detect duplicate cards, suggest deprecations.

Operations

1. Event Cleanup (--events or default)

Remove events older than maxDaysToKeep (default: 30 days):

# For each .jsonl file in .claude/memory/events/
# Filter out lines where ts is older than cutoff date
# Show count of removed events before deleting

• Show: "Found X events older than 30 days in Y files"
• Ask user confirmation before deleting
• Interest signals (.interest.jsonl) are also cleaned

2. Card Dedup Detection (--cards or default)

Scan .claude/memory/cards/*.md for potential duplicates:

Similarity check:

• Same file references (files[] overlap >= 50%)
• Similar titles (common words >= 60%)
• Same tags overlap >= 50%
• Same type

For each duplicate pair found:

Potential duplicates:
  1. mem_20260309_a1b2c3.md: "Auth null check"
  2. mem_20260312_d4e5f6.md: "Auth middleware guard"
  Overlap: files=[src/auth.ts], tags=[auth]

  Suggested action:
  - Merge into card 1 (older, more evidence)
  - Deprecate card 2

• List all potential duplicates
• Ask user which action to take for each pair
• Never auto-delete cards — always ask first

3. Card Lifecycle Review

List cards by status and activity:

• Stale cards: active cards with no evidence additions in 60+ days
• Draft cards: cards still in draft status (suggest review → active or deprecate)
• Deprecated cards: list for awareness

Display Format

=== Session Memory Prune Report ===

Events:
  Total: 450 events across 3 files
  Stale (>30 days): 120 events
  Action: [Delete stale events? y/n]

Cards:
  Total: 12 cards (8 active, 3 draft, 1 deprecated)
  Potential duplicates: 2 pairs
  Stale (no activity 60+ days): 1 card

  Duplicate pair 1:
    - mem_20260309_a1b2c3.md: "Auth null check" (active, imp:2)
    - mem_20260312_d4e5f6.md: "Auth middleware" (draft, imp:1)
    Suggestion: Merge evidence into first, deprecate second

  Stale cards:
    - mem_20260201_x1y2z3.md: "Old config pattern" (last evidence: 2026-02-01)
    Suggestion: Review — deprecate if no longer relevant

Storage:
  Events: 45 KB
  Cards: 12 KB
  Summaries: 28 KB
  Total: 85 KB

Important Rules

• NEVER delete cards without user confirmation
• NEVER delete events without showing count and asking
• --dry-run shows what would happen without making changes
• Deprecated cards are kept (not deleted) for history
• When merging duplicates, combine Evidence sections