chore(governance): community rollout for eAI

[srpatcha]

Closing issue

Fixes #44

Summary

Isolated community-governance rollout for eAI, branched from freshly fetched origin/master (abd678b6c627f8e960657d03fa6309d1448c7c37):

• Reconciled AGENTS.md: concise, truthful, repo-specific — exact build/test commands from README.md/CONTRIBUTING.md, contribution/security pointers, no invented lint/format commands.
• Copied the six wiki sources byte-for-byte into docs/wiki/.
• Added .github/workflows/linked-issue.yml pinned to policy SHA 92cb596c773496ec4df76717e8acf0e6b7700f73 (both tokens).
• Reconciled .github/PULL_REQUEST_TEMPLATE.md: all repo-specific sections preserved, exactly one top-level Closing issue section with canonical guidance and Fixes #<same-repository issue number>.

Validation

• python -c "import yaml; yaml.safe_load(open('.github/workflows/linked-issue.yml'))" → YAML OK, caller embeddedos-org/.github/.github/workflows/linked-issue-policy.yml@92cb596c773496ec4df76717e8acf0e6b7700f73.
• SHA 92cb596c773496ec4df76717e8acf0e6b7700f73 occurs exactly 2×; POLICY_COMMIT_SHA absent.
• Wiki SHA-256 equality (source vs docs/wiki/): all six EQUAL (Home b61fc4303efc, Getting-Started 419beb1982e4, Development babc11756de8, Security d48097c93f8b, FAQ 2f4d96e41516, _Sidebar 5cbfc8fc4d1c).
• git status --short --branch clean on chore/community-governance-eAI-20260911; local HEAD 72df53b7834ecd79b201c9db2d6982384a1efcfe matches origin/chore/community-governance-eAI-20260911.
• C build/test suites: NOT RUN in this Windows/VS Code host session — documented commands are recorded verbatim in AGENTS.md from README.md/CONTRIBUTING.md (cmake --preset linux-x64-release, cmake -B build -DEAI_BUILD_TESTS=ON, ctest --test-dir build --output-on-failure, python run_all_tests.py); CI (ci.yml, nightly, sanitizers) exercises them per PR.

Risk and rollout

Docs/governance-only change: no source, build-system, or CI behavior changes. Rollback = close this PR and delete the remote branch. No settings/default-branch writes performed.