docs(security-config): soften aspirational MUSTs to align with init template

[CybotTM]

Why

PR #77 shipped assets/branch-protection.json.template with two deliberate choices:

• enforce_admins: false — solo-maintainer Netresearch repos benefit from admin-bypass in emergencies
• required_signatures omitted — Dependabot/Renovate bot PRs without per-repo signing setup would otherwise be blocked

references/security-config.md was already in the repo with stricter language:

Line	Old	Conflict
~98	enforce_admins MUST be true	Template ships false
~166 (table)	`required_signatures	true

Anyone reading the skill now would see the contradiction as either a documentation bug or as license to "fix" their per-repo config (and admin-bypass themselves out of an emergency-merge path).

What changed

• enforce_admins section: switched from "MUST be true" to "SHOULD be true on mature multi-maintainer repos as a hardening target". Added explicit acknowledgement that the init script ships false as the pragmatic baseline, plus the upgrade command + emergency-bypass rationale.
• required_signatures table cell: now shows both states (target: true; init: unset) with the bot-signing precondition and per-repo upgrade trigger.
• The under-enforce_admins security-note callout now points at the unresolved-threads operator-side safety valve for repos where the admin-bypass IS the right choice.

What did NOT change

• No template change. PR feat: require branch protection at repo init (close enforcement gap) #77's branch-protection.json.template stays as-is.
• No script change. The init flow + feat: add skill validation CI job #31 checkpoint behaviour is unchanged.
• No SKILL.md change. (Already at the 499-word ceiling; left it alone.)

Test plan

• Markdown lint will run via CI on push
• Word count check: wc -w skills/github-project/SKILL.md = 499 (no change; this PR only touches security-config.md)
• CI green

Pre-merge gate

I'll run the unresolved-threads GraphQL check before merging — the hard rule I just had to bake into memory after burning 3 PRs on the same mistake.

[github-actions]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

Scanned Files

None

[gemini-code-assist]

Code Review

This pull request updates the security configuration documentation to provide more pragmatic guidance on branch protection settings. It relaxes the enforce_admins requirement for solo-maintainer repositories and adjusts the required_signatures setting to avoid blocking automation bots during initial setup. The reviewer suggested using relative paths for internal documentation links instead of absolute URLs to ensure they remain functional across different branches.

[Copilot]

Pull request overview

This PR updates the security-config.md reference documentation to remove contradictions with the branch-protection init template introduced in PR #77 (notably enforce_admins: false and required_signatures being omitted), by reframing those settings as pragmatic defaults with an explicit hardening path.

Changes:

• Softened enforce_admins guidance from “MUST” to “SHOULD (hardening target)” and documented why the init baseline keeps admin-bypass enabled.
• Updated the required_signatures table entry to distinguish between “target” vs “init” state and added context about bot-signing prerequisites.

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