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>

.github/agents/okr.dd.agent.md

@@ -54,7 +54,7 @@ Read the following files:
 3. **Feature spec**: `specs/<feature-id>/spec.md` — feature specification
 4. **Implementation plan**: `specs/<feature-id>/plan.md` — tech plan & data model
 5. **Technical architecture**: `docs/technical_architecture.md` — mandatory tech stack
-6. **DD template**: `.specify/templates/dd-template.md` — output structure template
+6. **DD template**: `packages/casan-harness/templates/dd-template.md` — output structure template
 
 ---
 
@@ -62,7 +62,7 @@ Read the following files:
 
 Generate the DD document at: `docs/output/ipa-docs/dd/dd-<mod-id>-<name>.md`
 
-The output **MUST** follow the structure defined in `.specify/templates/dd-template.md`:
+The output **MUST** follow the structure defined in `packages/casan-harness/templates/dd-template.md`:
 
 | § | Section | Content |
 |---|---------|---------|
@@ -88,7 +88,7 @@ The output **MUST** follow the structure defined in `.specify/templates/dd-templ
 2. Read SRS for requirements & NFR
 3. Read spec.md and plan.md
 4. Read `docs/technical_architecture.md`
-5. Read `.specify/templates/dd-template.md`
+5. Read `packages/casan-harness/templates/dd-template.md`
 
 Log: `[PROCESSING] Input file loading complete`