normalizeIssueNumber parsed with Number.parseInt, which stops at the
first non-digit ("42oops" -> 42, "42.9" -> 42, "4e2" -> 4) and loses
precision past 2^53 (9007199254740993 became 9007199254740992). The CLI
shares this helper for --issue, --limit, and the positional issue number,
so malformed values silently targeted the wrong issue before any integer
guard downstream could notice.
Validate the entire trimmed decimal token and require
Number.isSafeInteger so malformed or out-of-range values throw
"Invalid issue number" during argument parsing, before the state store
is opened or GitHub is contacted. Whitespace, leading plus, and leading
zero tolerance is preserved. Regression coverage added at both the
library level (tests/lib/github-coordination-gh-api.test.js) and the CLI
argument parser (tests/scripts/github-coordination.test.js).
Fixes#3514
github-coordination sync listed every repo issue and pushed the epic label onto all of them (#3084). Scope the listing to issues carrying the policy's epic label plus issues whose body still holds the coordination marker (label-drift recovery), deduped by number, and reject an empty labels.epic in loadPolicy. Tests cover the filtered path and the recovery path with exact gh argv. Independent exact-head review passed with no P0/P1; CI 44/44 at the head.
- README: add a visible ## Security section (official sources, vuln reporting via SECURITY.md, GateGuard/IOC/AgentShield guardrails, security guide); make stats line a plain paragraph to clear MD028
- eslint: empty catch comment in run-with-flags.js; drop unneeded escape in github-coordination/parsing.js; remove unused execFileSync import in its test (#2236 follow-ups)
- markdownlint: wrap bare URLs in rules/vue/*.md (#2250 follow-up)
npm run lint green; full suite 2836/2836.
akushonkamen