🔧 chore: improve skills cross-references and CLAUDE.md guidance

- Add --amend option with safety rules to commit command
- Add logging skill cross-references to angular-template and html-template
- Fix logging skill name from logging-helper to logging
- Add extended thinking triggers, context monitoring, and code investigation
  rules to CLAUDE.md

CLAUDE.md

@@ -112,6 +112,52 @@ angular-template → html-template → logging → tailwind
 
 Use `/clear` between unrelated tasks to prevent context degradation.
 
+### Long-Running Task Pattern
+
+For complex tasks approaching context limits:
+1. Dump progress to a `.md` file (e.g., `progress.md`)
+2. Use `/clear` to reset context
+3. Resume by reading the progress file
+4. Continue from where you left off
+
+### Context Monitoring
+
+- Use `/context` to check current token usage
+- Fresh session baseline: ~20k tokens
+- Consider `/compact` when approaching 150k tokens
+- Prefer `/clear` over `/compact` when starting new topics
+
+## Extended Thinking
+
+Use progressive thinking depth for complex analysis:
+
+| Trigger | Thinking Budget | Use Case |
+|---------|----------------|----------|
+| `"think"` | ~4k tokens | Basic analysis, simple decisions |
+| `"think hard"` | ~10k tokens | Moderate complexity, multi-factor decisions |
+| `"think harder"` | ~16k tokens | Deep analysis, architectural decisions |
+| `"ultrathink"` | ~32k tokens | Maximum depth, critical planning |
+
+**Examples:**
+- "Think about how to structure this component"
+- "Think hard about the best approach for state management"
+- "Ultrathink about the architecture for this feature"
+
+## Code Investigation (MANDATORY)
+
+**Never speculate about code you haven't read.**
+
+If user references a specific file:
+1. **READ the file first** using the Read tool
+2. **THEN provide analysis** based on actual contents
+3. If file doesn't exist, **say so explicitly**
+
+**Anti-Hallucination Rules:**
+- Never describe code you haven't opened
+- Never assume file contents based on names
+- Never guess API signatures without documentation
+- Always verify imports and dependencies exist
+
 ## Implementation Decisions
 
 | Task Type                         | Required Agent     | Escalation Path                           |