Refactor: Slim down SKILL.md by moving details to reference files

- Move detailed compaction survival content to WORKFLOWS.md (already had section)
- Move detailed TodoWrite integration (temporal layering) to BOUNDARIES.md
- Condense database discovery rules to one line
- Keep SKILL.md focused on essentials with links to detailed docs

Result: SKILL.md reduced from 511 to 443 lines (-68 lines, 13% reduction)
Amp-Thread-ID: https://ampcode.com/threads/T-244a1772-7dbe-448e-bff2-f4d840095190
Co-authored-by: Amp <amp@ampcode.com>

examples/claude-code-skill/references/BOUNDARIES.md

@@ -246,6 +246,55 @@ Rare, but happens when bd issue turns out simpler than expected.
 5. Note: "Completed in single session, simpler than expected"
 ```
 
+### Pattern 4: Temporal Layering (Complementary Use)
+
+**Key insight**: TodoWrite and bd operate at different timescales and serve different memory needs.
+
+**TodoWrite** (short-term working memory - this hour):
+- Tactical execution steps
+- Present/future tense ("Implement", "Test", "Deploy")
+- Marked completed as you go
+- Ephemeral: Disappears when session ends
+
+**Beads** (long-term episodic memory - this week/month):
+- Strategic objectives and context
+- Past tense in notes ("COMPLETED", "Discovered", "Blocked by")
+- Key decisions and outcomes in notes field
+- Persistent: Survives compaction and session boundaries
+
+**The Handoff Pattern:**
+1. **Session start**: Read bead → Create TodoWrite items for immediate actions
+2. **During work**: Mark TodoWrite items completed as you go
+3. **Reach milestone**: Update bead notes with outcomes + context
+4. **Session end**: TodoWrite disappears, bead survives with enriched notes
+
+**After compaction**: TodoWrite is gone forever, but bead notes reconstruct what happened.
+
+**Example - TodoWrite tracks execution, Beads capture meaning:**
+
+TodoWrite for this session:
+```
+[completed] Implement login endpoint
+[in_progress] Add password hashing with bcrypt
+[pending] Create session middleware
+```
+
+Corresponding bead notes:
+```bash
+bd update issue-123 --notes "COMPLETED: Login endpoint with bcrypt password
+hashing (12 rounds). KEY DECISION: Using JWT tokens (not sessions) for stateless
+auth - simplifies horizontal scaling. IN PROGRESS: Session middleware implementation.
+NEXT: Need user input on token expiry time (1hr vs 24hr trade-off)."
+```
+
+**Don't duplicate**: TodoWrite tracks execution, Beads captures meaning and context.
+
+**When to use this pattern:**
+- Long-running features requiring multiple sessions
+- Work that will likely face compaction
+- Need both immediate visibility (TodoWrite) and long-term memory (bd)
+- Strategic work with tactical execution steps
+
 ## Real-World Examples
 
 ### Example 1: Database Migration Planning