chore(freeze): snapshot demo state before Plan-07 hardening work

Freeze current submission/demo baseline:
- casan-next-plans/: full task-level plan set (Plan 00 index + 02/04/06/07/08/09/12, QA, slide deck)
- optimize-docs/video-steps/: per-vector scene breakdown (commands/screen-text/script) + start-tmux
- run-all.sh / scorecard.sh / map-live.sh: REAL=1 live-battery wiring
- regenerated evidence + audit/telemetry logs from live REAL=1 run
- submission README + video recording guide updates
- dry-run pipeline logs for 001-okr-web-app

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

optimize-docs/video-steps/H6-AgentOps/D1-cost-spike/screen-text.md

@@ -0,0 +1,20 @@
+# TEXT HIỂN THỊ — D1  🔥 SHOWPIECE H6 (không cắt)
+
+## Title card
+```
+D1 · COST-SPIKE (step tốn 3× token)
+AgentOps · câu hỏi chốt H6
+```
+
+## Caption trong khi chạy
+```
+Telemetry 4 step: srs=210 · bd=195 · spec=230 · plan=710  (plan ~3×)
+Ngưỡng = 3.0 × median
+```
+
+## Caption kết quả (nhấn mạnh lớn)
+```
+✅ median=220 · threshold=660 · SPIKE step=plan tokens=710 (>660)
+COST_SPIKE_DETECTED count=1  ·  exit = 2  →  GATE ĐỎ
+"Nếu một step đột nhiên tốn gấp 3 lần token, có ai biết không?" → CÓ.
+```