feat(selfhost): wire native Docker Compose secrets for the gittensory service

[JSONbored]

Summary

• Adds a top-level secrets: block to docker-compose.yml for the 10 highest-value secrets the always-on gittensory service reads (GitHub App private key, webhook secret, API/MCP/internal-job tokens, the setup token, the two token-encryption master keys, the Orb enrollment secret, and the PagerDuty routing key). Each is file-mounted at /run/secrets/<name> instead of sitting as a plain environment:/env_file value visible via docker inspect/docker compose config.
• Zero application code changes: the app already has a fully generic <NAME>_FILE resolver (src/selfhost/load-file-secrets.ts, previously only demonstrated for GITHUB_APP_PRIVATE_KEY_FILE) — this PR just wires the Compose-level mount + sets the matching <NAME>_FILE env default for the rest of the list.
• Purely additive and backward-compatible: an inline .env value always takes priority over the file (existing loader behavior, unchanged), so this cannot break any current self-host operator (including the live edge-nl-01 instance, which keeps using inline .env values unless/until it migrates a secret at a time).
• scripts/selfhost-init-secrets.sh idempotently creates empty placeholder files for every declared secret so docker compose build/up never fails on a missing secrets: source file, even on a fresh checkout that has never touched this convention. Wired into both deploy-selfhost-prebuilt.sh and deploy-selfhost-image.sh before they touch docker compose, so every future deploy self-heals.
• secrets/README.md documents the convention; .env.selfhost.example, .env.example, and the /docs/self-hosting-security page point at it, making the pre-existing (but previously only prose) "Prefer secret files" guidance concrete and turnkey.

Scope

• The PR title follows type(scope): short summary Conventional Commit format.
• This PR is focused and does not mix unrelated backend, UI, MCP, docs, dependency, and deploy changes.
• This follows CONTRIBUTING.md and does not reintroduce GitHub Pages, VitePress, site/, or CNAME.
• Maintainer/own-branch PR — no linked issue filed; this came directly out of a same-session operator request to harden self-host secrets handling, following the security doc's own pre-existing "Prefer secret files" guidance.

Validation

• git diff --check
• npm run test:ci — full local gate green, including ui:openapi:check, ui:lint, ui:typecheck, ui:test, ui:build.
• npm audit --audit-level=moderate — 0 vulnerabilities.
• docker compose config validated with every profile active (postgres, observability, rees, qdrant, ollama, visual-review, caddy, tailscale, pgbouncer, runner, backup) — all 22 services resolve cleanly, no YAML errors.
• Empirically verified the secrets mount at actual container runtime (not just config-parse time): built a throwaway override swapping the gittensory service for busybox, confirmed /run/secrets/github_app_private_key and /run/secrets/pagerduty_routing_key exist and are readable inside the running container.
• scripts/selfhost-init-secrets.sh tested directly: creates all 10 placeholder files on first run, correctly no-ops (never overwrites) on a second run.

Safety

• No secrets, wallet details, hotkeys, coldkeys, user PATs, private keys, raw trust scores, private rankings, or private maintainer evidence are exposed. (New secrets/* files are gitignored except the README; verified git add secrets/ only stages README.md.)
• Public GitHub text stays sanitized, low-noise, and does not imply compensation guarantees or optimization tactics.
• Auth, cookie, CORS, GitHub App, Cloudflare, or session changes include negative-path tests. (N/A — no app-level auth/session code changed, this is deploy-time secret delivery only.)
• API/OpenAPI/MCP behavior is updated and tested where needed. (N/A — no API surface changed.)
• No visible UI change beyond a docs-content addition on /docs/self-hosting-security — no UI Evidence table needed (prose/code-block only, no new interactive states).
• Public docs/changelogs are updated where needed; changelogs are only edited for release-prep PRs.

Notes

Scoped to the always-on gittensory service's own secrets for this pass. The same convention (one secrets: entry + one <NAME>_FILE default) extends trivially to the optional-profile services' own secrets (Postgres password, Grafana admin password, Litestream S3 keys, Tailscale auth key, runner tokens, Qdrant/Browserless API keys) as a natural follow-up — left out here to keep this PR narrow and fully testable against the one service I can validate end-to-end.

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Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	gittensory-ui	00cf22f	Commit Preview URL Branch Preview URL	Jul 11 2026, 04:48 PM

[superagent-security]

Superagent didn't find any vulnerabilities or security issues in this PR.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.32%. Comparing base (46d63b9) to head (28a44df).
⚠️ Report is 2 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

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Flag	Coverage Δ
shard-1	46.34% <ø> (ø)
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⏸️ Gittensory review result - manual review recommended

_{Review updated: 2026-07-11 16:56:36 UTC}

9 files · 1 AI reviewer · 2 blockers · readiness 93/100 · CI green · unstable

⏸️ Suggested Action - Manual Review

• No linked issue detected — If this PR is intended to solve an issue, link it explicitly in the PR body.
• Maintainer requires a linked issue — Link the relevant issue (for example Closes #123) before opening the PR.

Review summary
This PR wires a top-level Docker Compose `secrets:` block for 10 high-value secrets on the always-on `gittensory` service, using file mounts instead of plain env vars, with an idempotent placeholder-creation script and matching docs. The application-side reader is unchanged and the `<NAME>_FILE` precedence logic is sound and backward-compatible, but the `build + boot smoke test` CI check is failing on this commit, and the diff itself explains why: the new `secrets:` block requires each `file:` source to exist on disk before Compose will even parse/build, yet `scripts/selfhost-init-secrets.sh` is only invoked from `deploy-selfhost-prebuilt.sh` and `deploy-selfhost-image.sh` — not from whatever CI job runs the smoke test directly against `docker-compose.yml`.

Blockers

• docker-compose.yml's new top-level `secrets:` block (e.g. `github_app_private_key: file: ./secrets/github_app_private_key.pem`) requires every listed file to exist before `docker compose build`/`up`/`config` will succeed, but the placeholder-creation step (`scripts/selfhost-init-secrets.sh`) is wired only into `deploy-selfhost-prebuilt.sh` and `deploy-selfhost-image.sh`, not into whatever workflow runs the failing 'build + boot smoke test' check — a fresh checkout/CI runner that invokes `docker compose` directly (without going through those two deploy scripts) will fail exactly as the failed check shows.
• Per repo policy, this PR must close or clearly link an eligible open issue; the description only drops an inline `Wire on-call/paging for the central hosted service #4937-secrets-hardening` tag rather than a real issue reference, so as written this looks like unsolicited feature/hardening work rather than issue-tied work.
• docker-compose.yml:965 makes the base Compose file depend on `./secrets/*.txt` and `./secrets/github_app_private_key.pem`, but `.gitignore:18` prevents those files from being present in a fresh checkout and `scripts/selfhost-init-secrets.sh` only runs from the deploy wrappers, so any existing direct `docker compose config`/`up` path fails before the app can prefer inline `.env` values; either keep these secrets in a generated/opt-in override or make the base Compose source files exist before Compose is invoked.

Nits — 7 non-blocking

• docker-compose.yml is now ~1000 lines; consider splitting the secrets wiring or per-service env blocks into an include/override file per Compose's `include:` support if it keeps growing.
• secrets/README.md and the docs page both use 'master key' terminology (`secrets/README.md:53`, `docs.self-hosting-security.tsx` copy) — consider 'primary key' for consistency with more neutral naming used elsewhere.
• No automated test (e.g. a `docker compose config` or `config --quiet` CI step) validates that all `secrets:` file sources resolve before a real deploy attempt — exactly the class of failure now showing red on this PR.
• `scripts/selfhost-init-secrets.sh` and the two deploy scripts have no test coverage; consider at least a shellcheck/CI smoke invocation for the new script given it now gates every deploy.
• Add a `docker compose config` (or `--dry-run`) step to whatever CI job runs 'build + boot smoke test', invoking `scripts/selfhost-init-secrets.sh` first, so the secrets file requirement is satisfied the same way the two production deploy scripts already do it.
• Diff looks like trivial or whitespace-only churn — Reduce whitespace-only or formatting-only churn and keep the diff focused on substantive changes.
• Code changes lack test evidence — Add focused regression tests or explain why existing coverage is sufficient.

Concerns raised — review before merging

• No linked issue detected — If this PR is intended to solve an issue, link it explicitly in the PR body.
• Maintainer requires a linked issue — Link the relevant issue (for example Closes #123) before opening the PR.

Signal	Result	Evidence
Code review	❌ 2 blockers	1 reviewer
Linked issue	⚠️ Missing	No linked issue or no-issue rationale found.
Related work	✅ No active overlap found	No same-issue or scoped active PR overlap found.
Change scope	✅ 20/20	Low review scope from cached public metadata (no linked issue context).
Validation posture	✅ 25/25	PR body includes validation/test evidence.
Contributor workload	✅ 10/10	Author activity: 45 registered-repo PR(s), 37 merged, 414 issue(s).
Contributor context	✅ Confirmed Gittensor contributor	JSONbored; Gittensor profile; 45 PR(s), 414 issue(s).
Gate result	❌ Blocking	Repo-configured hard blocker found.
Improvement	⚠️ ℹ️ None detected	risk: elevated · value: none — No structural-improvement signals were detected for this PR.

Review context

• Author: JSONbored
• Role context: owner (maintainer lane)
• Public audience mode: oss maintainer
• Lane context: Repository is configured for direct PR review.
• Public profile languages: not available
• Official Gittensor activity: 45 PR(s), 414 issue(s).
• PR-specific overlap: none found.

Contributor next steps

• Treat this as maintainer-lane context rather than normal contributor-lane activity.
• Explain no-issue PR.
• Link the issue being solved, or explicitly explain why this is a no-issue PR.

Signal definitions

• Related work = same linked issue, overlapping active PRs, or title/path similarity.
• Change scope = cached public metadata such as size labels, draft state, and review-burden hints.
• Validation posture = whether the PR provides enough public validation/test evidence for maintainer review.
• Contributor workload = public contributor activity and cleanup pressure, not a repo-wide quality failure.
• Contributor context = public GitHub/Gittensor identity context; non-Gittensor status is not a blocker.

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Visual preview

Route	Viewport	Before (production)	After (this PR's preview)	Diff
/docs/self-hosting-security	desktop			—
/docs/self-hosting-security	mobile			—

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_{🟩 Safe / merged · 🟦 Advisory · 🟨 Held for review · 🟥 Blocked / closed}

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