docs: Add Decision Audit checklist to SESSION-HANDOFF-TEMPLATE

Mandatory checklist before writing handoff prevents 'verbal decision →
lost context' failures.

Chroniclers must verify:
- All decisions documented in task files
- No promises without task tracking
- No 'supposed to be done' items undocumented

If any check fails: STOP, update task docs, commit, THEN handoff.

Related: FFG-STD-002 v2.0 Decision Capture Rule
Related: NEXT-SESSION-PRIORITY.md documentation process review

SESSION-HANDOFF-TEMPLATE.md

@@ -99,11 +99,34 @@ You are continuing the work of those who came before:
 - Use "checkpoint" to pause for clarification
 
 **At session end:**
+- **Complete Decision Audit** (see below - MANDATORY)
 - Write your memorial (see past Chroniclers for format)
 - Update handoff documents
 - Commit everything including memorial
 - Push all changes
 
+### Decision Audit (MANDATORY Before Handoff)
+
+**Before writing handoff documentation, you MUST verify:**
+
+**Decision Capture Check:**
+- [ ] Did Michael make any decisions this session that aren't in task docs?
+- [ ] Did I promise to do something that isn't tracked in a task?
+- [ ] Are there any "supposed to be done" items that aren't documented?
+- [ ] Did we discuss adding/removing platforms, features, or requirements?
+- [ ] Did task priorities or assignments change?
+
+**If YES to ANY of these:**
+1. ⚠️ **STOP** — Do not write handoff yet
+2. Update the relevant task documentation NOW
+3. Commit: `docs: Update Task #XX - [decision made]`
+4. Push to Gitea
+5. THEN write handoff
+
+**This prevents:** "Verbal decision → lost context" failures where next Chronicler has no record of decisions made this session.
+
+**See:** FFG-STD-002 Section "Decision Capture Rule" for complete details
+
 ---
 
 ## Michael's Health & Accessibility (NON-NEGOTIABLE)