ci: add automatic Planfile GitHub synchronization

[tom-sapletta-com]

Adds automatic Planfile GitHub synchronization for this repository.

The caller is pinned to semcod/planfile@v0.1.126 and runs hourly, on
relevant Planfile changes, and manually. Governance evidence is in the
implementation ticket on this branch.

[ifuri-validator-agent]

Validator approval after policy checks for exact head 28d9454cc66bfc287c00b579a73b929f349eec6a.

Ticket: ticket-015
Correlation ID: local-semcod-estimation-pr-15-ticket-015
Model: zai/glm-5.3
Reviewed diff chunks: 1
Advisory LLM verdict: APPROVE
Advisory summary: Reviewed all 1 diff chunk(s). Adds a new GitHub Actions caller workflow for Planfile GitHub sync, pinned by commit SHA to semcod/planfile v0.1.126, plus ticket-015 governance/evidence files and documentation updates. Required checks (test, windows-governance) pass; observational checks also pass. The workflow uses least-privilege permissions (contents: read, issues: write) and runs on schedule, push to main with path filters, and manual dispatch only.
Advisory findings: none
The LLM output above is advisory and was not used as the approval trust root.
Semantic review prerequisite: satisfied; policy 676cb4516bbfed2a000e40b9b1b6e4a430ecc761ec546aeb53d721a1905cfdd7.

Actual PR impact radar

Exact range: e207b5182d289bd2db2b33b2b6d7cd105551cf30...28d9454cc66bfc287c00b579a73b929f349eec6a
Change digest: 9095734cc10607ea8d2b909a9c81ddb50d3cfb3257b89200178c451d4e95a68a
Score: 68/100 (L), estimated 68 min, split recommended: true
Affected services/components: repository-wide/unclassified

Machine-readable radar JSONL and SVG

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Merge will be attempted after this approval when explicitly authorized. ## Decision record (recomputable)

DECISION D-015-5690
TICKET ticket-015
HEAD_SHA 28d9454cc66bfc287c00b579a73b929f349eec6a
CORRELATION_ID local-semcod-estimation-pr-15-ticket-015
ACTOR agent:ifuri-validator-agent[bot]
APPLIED_RULE P-CORE-015
INPUT author_login = "tom-sapletta-com"
INPUT observed_checks = ["test=PASS","governance / remote lifecycle=PASS","windows-governance=PASS","governance / enforce=PASS"]
INPUT required_checks = ["test","windows-governance"]
INPUT required_checks_source = "protected registry (governance/required-checks.json)"
INPUT reviewer_login = "ifuri-validator-agent[bot]"
INPUT semantic_review_assessment = {"schema":"subactor.validator/semantic-review-assessment/v1","subject":{"repository":"semcod/estimation","pull_request":15,"head_sha":"28d9454cc66bfc287c00b579a73b929f349eec6a","base_sha":"e207b5182d289bd2db2b33b2b6d7cd105551cf30","diff_sha256":"c16e27281223accf50c57dd4b0419b8ff336d6400810655afa74c664d07ef0ef"},"policy":{"policy_schema":"subactor.validator/semantic-review-policy/v1","policy_version":1,"policy_sha256":"676cb4516bbfed2a000e40b9b1b6e4a430ecc761ec546aeb53d721a1905cfdd7","required":true,"critical_paths":[".github/workflows/planfile-github-sync.yml"],"observed_paths":[".github/workflows/planfile-github-sync.yml","TODO.md","project/TICKETS.md","project/ticket-015/README.md","project/ticket-015/ai-codex-logs.txt","project/ticket-015/ai-codex.md","project/ticket-015/changelog.md","project/ticket-015/intent.json","project/ticket-015/preprompt.md"]},"grounding":"full-diff-not-per-finding-proof","execution_authority":false,"status":"satisfied","reason":null,"review_sha256":"71557846a0f35bec7a589b547dc7294dc6d08794191f0203788377d001e890bb","unresolved":[]}
INPUT superseded_checks = []
INPUT ticket_radar_receipt = {"schema":"subactor.ticket-radar/v1","base_sha":"e207b5182d289bd2db2b33b2b6d7cd105551cf30","head_sha":"28d9454cc66bfc287c00b579a73b929f349eec6a","change_digest":"9095734cc10607ea8d2b909a9c81ddb50d3cfb3257b89200178c451d4e95a68a","score":68,"complexity":"L","estimated_minutes":68,"split_recommended":true,"services":[],"authority":"ADVISORY","promotion":"FORBIDDEN"}
VERDICT APPROVE AUTHORITY DETERMINISTIC
REJECTED REQUEST_CHANGES BECAUSE NO_UNSAFE_CHANGE_REASON_FOUND
ADVISORY llm_verdict = "APPROVE" MODEL "zai/glm-5.3"
ASSERT VERDICT_AUTHORITY != "ADVISORY"