docs(miner): document coding-agent env vars

[taillred]

Summary

• Document the miner's coding-agent provider env vars in the README and DEPLOYMENT guide.
• Cross-reference the interface-level contract in docs/coding-agent-driver.md.
• Closes Document MINER_CODING_AGENT_* env vars in the miner package's README and DEPLOYMENT.md #5172.

Scope

• The PR title follows type(scope): short summary Conventional Commit format, for example fix(api): restore profile access checks.
• 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.
• I linked a currently open issue this PR resolves (e.g. Closes #123) — a linked open issue is required for every contributor PR.

Validation

• git diff --check
• npm run actionlint
• npm run typecheck
• npm run test:coverage locally; codecov/patch requires ≥99% coverage of the lines AND branches you changed (aim for 100% on your diff so CI variance does not fail near the threshold). Global coverage is a non-blocking trend with a loose 90% backstop, not the gate.
• npm run test:workers
• npm run build:mcp
• npm run test:mcp-pack
• npm run ui:openapi:check
• npm run ui:lint
• npm run ui:typecheck
• npm run ui:build
• npm audit --audit-level=moderate
• New or changed behavior has unit/integration tests for new branches, fallback paths, and sanitizer boundaries

If any required check was skipped, explain why:

• Docs-only change; the remaining application/build/test checks are not applicable to this patch.

Safety

• No secrets, wallet details, hotkeys, coldkeys, user PATs, private keys, raw trust scores, private rankings, or private maintainer evidence are exposed.
• 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.
• API/OpenAPI/MCP behavior is updated and tested where needed.
• UI changes use live API data or real empty/error/loading states, not production mock/demo fallbacks.
• Visible UI changes include a UI Evidence section below with JPG/JPEG or PNG screenshots arranged as organized, captioned, clickable thumbnails. SVG screenshots are not used as review evidence. Review-only screenshots or recordings are not committed to the repository.
• Public docs/changelogs are updated where needed; changelogs are only edited for release-prep PRs.

UI Evidence

N/A — docs-only Markdown updates; no screenshots are needed.

Notes

• Updated packages/gittensory-miner/README.md and packages/gittensory-miner/DEPLOYMENT.md.
• Refers readers to docs/coding-agent-driver.md for the interface contract.

[superagent-security]

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

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✅ Gittensory review result - approve/merge recommended

_{Review updated: 2026-07-12 18:37:56 UTC}

2 files · 2 AI reviewers · no blockers · readiness 100/100 · CI green · clean

✅ Suggested Action - Approve/Merge

• safe to merge

Review summary
This is a docs-only PR adding a "Coding-agent driver configuration" section to both README.md and DEPLOYMENT.md, documenting MINER_CODING_AGENT_PROVIDER, MINER_CODING_AGENT_CLAUDE_MODEL, MINER_CODING_AGENT_CODEX_MODEL, and MINER_CODING_AGENT_TIMEOUT_MS. Cross-checking against packages/gittensory-engine/src/miner/driver-factory.ts confirms the provider names (noop/claude-cli/codex-cli/agent-sdk), the comma-separated fallback-list semantics, the per-provider env-key mapping (agent-sdk and noop correctly documented as ignoring model/timeout knobs), and the fail-closed behavior on an empty/unknown provider list — all accurately represented. The DEPLOYMENT.md section correctly cross-links back to the README anchor and to docs/coding-agent-driver.md, and closes the linked issue #5172 as claimed.

Nits — 5 non-blocking

• The docs assert the CLI driver's default timeout is exactly 120000 ms — this value isn't visible in the provided driver-factory.ts excerpt, so it's worth confirming against cli-subprocess-driver.js before merge.
• The README table lists accepted values for MINER_CODING_AGENT_PROVIDER as a fixed set but doesn't mention that names are lowercased and skip unknowns silently (parseDriverNames trims+lowercases, isConfiguredCodingAgentDriver denies unknowns) — a one-line note on case-insensitivity could help operators debugging a typo'd provider name.
• Consider linking directly to CODING_AGENT_DRIVER_CONFIG_ENV in driver-factory.ts as the source of truth so the table doesn't silently drift if a provider's config map changes.
• nit: packages/gittensory-miner/README.md:119 adds a new `docs/coding-agent-driver.md` link, but the provided file set does not include that target, so confirm the relative link resolves from the miner package README rather than pointing at a missing package-local doc.
• nit: packages/gittensory-miner/README.md:124 duplicates env-var reference material while the same README already names `docs/env-reference.md` as the env-var source of truth, so confirm that generated reference contains the same four `MINER_CODING_AGENT_*` entries to avoid drift.

Signal	Result	Evidence
Code review	✅ No blockers	2 reviewers, synthesized
Linked issue	✅ Linked	#5172
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 (1 linked issue).
Validation posture	✅ 25/25	PR body includes validation/test evidence.
Contributor workload	✅ 10/10	Author activity: 53 registered-repo PR(s), 34 merged, 1 issue(s).
Contributor context	✅ Confirmed Gittensor contributor	luckydicer; Gittensor profile; 53 PR(s), 1 issue(s).
Gate result	✅ Passing	No configured blocker found.
Improvement	⚠️ ℹ️ Insufficient signal	risk: clean · value: insufficient-signal — Nothing measurable for the structural-improvement analyzers on this PR (e.g. no code files changed). LLM value judgment: minor — This is a small, well-targeted documentation addition that fills a real operator-facing gap (previously undocumented env vars) and is accurately sourced from the actual driver-factory implementation, but its scope and impact are narrow.

Linked issue satisfaction

Partially addressed
The README and DEPLOYMENT.md changes thoroughly document all four env vars with accepted values/defaults and cross-reference docs/coding-agent-driver.md as required, but the diff shows no drift-check test verifying the documented env var names/defaults match packages/gittensory-engine/src/miner/driver-factory.ts, which the issue explicitly calls out as a required deliverable.

Review context

• Author: luckydicer
• Role context: outside_contributor
• Public audience mode: oss maintainer
• Lane context: Repository is configured for direct PR review.
• Public profile languages: not available
• Official Gittensor activity: 53 PR(s), 1 issue(s).
• PR-specific overlap: none found.

Contributor next steps

• Keep the PR focused and include validation evidence before maintainer review.

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

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Gittensory approves — the gate is satisfied and CI is green.