docs: align all documentation with the new repo structure

Update agent protocols (.claude/agents, .github/agents), guides, runbooks and READMEs
to the post-restructure layout: .specify/{scripts,tests,security,config,templates,
governance,memory,level5-config} -> packages/casan-harness/...; docs/input +
golden-runs + traceability-map -> apps/okr/domain/...; drop AINative_OKR_CASAN5/ prefix.
Runtime-state paths (.specify/logs, .specify/agentops, .specify/level5/central-governance)
kept as-is. Historical evidence under docs/output/ left untouched (immutable run records).

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

.claude/agents/okr.reviewplan.md

@@ -64,7 +64,7 @@ Optional: feature-id (e.g. `001-xxx`). If empty, auto-detect from the active bra
 
 ## Setup
 
-Run `.specify/scripts/powershell/check-prerequisites.ps1 -Json -PathsOnly` from repo root and parse:
+Run `packages/casan-harness/scripts/powershell/check-prerequisites.ps1 -Json -PathsOnly` from repo root and parse:
 
 - `FEATURE_DIR` — absolute path to the feature specs directory
 - `FEATURE_SPEC` — path to `spec.md`
@@ -75,7 +75,7 @@ Load the following documents:
 - `docs/output/specs/<feature-id>/contracts/` — API contracts (**warn** if missing)
 - `docs/output/specs/<feature-id>/research.md` — library/framework decisions
 - `docs/output/specs/<feature-id>/quickstart.md` — integration scenarios
-- `.specify/memory/constitution.md` — project Constitution
+- `packages/casan-harness/memory/constitution.md` — project Constitution
 - `docs/technical_architecture.md` — system architecture
 
 ---