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>

apps/okr/domain/README.md

@@ -4,6 +4,6 @@ OKR-domain data consumed by the CASAN harness, kept separate from the reusable h
 Populated in Plan-01 Phase 5. Referenced by scripts via `CASAN_DOMAIN_ROOT` (default this dir).
 
 Planned contents (moved from `.specify/` / `docs/` in Phase 5):
-- `golden-runs/` — golden baselines for drift/H7 (from `.specify/level5/golden-runs/`)
-- `input/` — requirement/architecture specs (from `docs/input/`)
-- `corpus/` — redteam + benign corpora (from `.specify/security/redteam-*.jsonl`, `benign-corpus/`)
+- `golden-runs/` — golden baselines for drift/H7 (from `apps/okr/domain/golden-runs/`)
+- `input/` — requirement/architecture specs (from `apps/okr/domain/input/`)
+- `corpus/` — redteam + benign corpora (from `packages/casan-harness/security/redteam-*.jsonl`, `benign-corpus/`)