refactor(structure): promote app to repo root + remove redundant workspace cruft

Standard production layout: the OKR app (was nested under AINative_OKR_CASAN5/) is now
the repository root. No more wrapper directory.

- Promote AINative_OKR_CASAN5/* -> repo root (backend/ frontend/ packages/ apps/
  .specify/ docs/ infra/ nginx/ scripts/ + configs). Merge tool dirs: .gitea (kept the
  active deploy ci.yml, added harness-ci.yml + runbooks), .claude (agents/commands +
  launch.json), .github moved up.
- Remove redundant: 00_SUBMISSION_PACKAGE, scattered root notes (FPT_CASAN_Full.md,
  tu-tuong-casan.md, casan-tu-sinh..., casan_harness_assessment.md, source-review...,
  README_CASAN5_REFINED.md), casan-next-plans/ and optimize-docs/ (competition/planning
  artifacts — roadmap + design history preserved in git log / commit messages).
- Update all references to the old layout:
  - .gitea/workflows/{ci,harness-ci}.yml, .github/workflows/{ci,deploy}.yml:
    working-directory .; drop AINative_OKR_CASAN5/ prefix; .specify/{tests,scripts}
    -> packages/casan-harness/... (.specify/logs state kept)
  - .claude/launch.json, .gitea/*-runbook.md: path prefixes
  - CLAUDE.md, README.md: docs/input -> apps/okr/domain/input
  - policy-bundle.yaml: 8 policy paths -> packages/casan-harness/...; manifest re-signed
- secrets-scan.sh: fixture excludes -> new package/domain paths.

Full gate from the new root: PASS=64 FAIL=0 SKIP=3.

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

packages/casan-harness/agentops/alerts.yaml

@@ -0,0 +1,86 @@
+version: 1.0
+description: AgentOps Alert Rules
+
+alerts:
+
+  - id: ALERT-001
+    name: High Latency
+    condition: latency_ms > 5000
+    severity: medium
+    action:
+      - log
+      - notify
+
+  - id: ALERT-002
+    name: High Retry
+    condition: retry_count > 2
+    severity: medium
+    action:
+      - log
+      - notify
+
+  - id: ALERT-003
+    name: Failure Detected
+    condition: status == "failed"
+    severity: high
+    action:
+      - log
+      - notify
+      - escalate
+
+  - id: ALERT-004
+    name: High Cost Spike
+    condition: cost_estimate > 0.05
+    severity: medium
+    action:
+      - log
+
+  - id: ALERT-005
+    name: Hallucination Risk
+    condition: output contains ("maybe" or "might be incorrect")
+    severity: low
+    action:
+      - log
+      - flag
+
+  - id: ALERT-006
+    name: Token Overuse
+    condition: total_tokens > 5000
+    severity: medium
+    action:
+      - log
+      - notify
+
+notification:
+
+  channels:
+
+    - type: log
+      path: ".specify/agentops/alerts.log"
+
+    - type: console
+      enabled: true
+
+    # future integration
+    # - type: slack
+    #   webhook: "https://hooks.slack.com/..."
+
+escalation:
+
+  enabled: true
+
+  rules:
+    - severity: high
+      action: immediate_alert
+
+    - severity: medium
+      action: batched_alert
+
+    - severity: low
+      action: log_only
+
+level4_gate:
+  alert_log_must_exist: true
+  failed_step_must_emit_alert: true
+  retry_threshold_must_emit_alert: true
+  cost_spike_must_emit_alert: true