feat(miner-hands): CodingAgentDriver factory + provider-style config resolution (#4289)

[andriypolanski]

Closes #4289

Summary

Wires the landed CLI-subprocess (#4266) and Agent-SDK (#4267) backends into createCodingAgentDriver, mirroring src/selfhost/ai-config.ts provider resolution: comma-separated MINER_CODING_AGENT_PROVIDER, deny-by-default unknown names, per-provider env config map with every declared key consumed, and primary-then-fallback selection via resolveFirstConfiguredCodingAgentDriverName.

Fixes the gate blocker that closed prior attempts (#4561, #4593) — dry-run/paused attempts no longer require spawn for CLI providers.

Provider registry

Name	Backend	Config env keys (consumed)
noop	stub	—
claude-cli	createCliSubprocessCodingAgentDriver("claude")	MINER_CODING_AGENT_CLAUDE_MODEL, MINER_CODING_AGENT_TIMEOUT_MS
codex-cli	createCliSubprocessCodingAgentDriver("codex")	MINER_CODING_AGENT_CODEX_MODEL, MINER_CODING_AGENT_TIMEOUT_MS
agent-sdk	createAgentSdkCodingAgentDriver	— (SDK uses account default; no model key today)

Deliberately not declared: max-turns (task-level CodingAgentDriverTask.maxTurns) and agent-sdk model (driver exposes no model option).

Key design choices

• Fail-closed: unknown provider → unconfigured_coding_agent_driver:<name>; CLI without spawn → unconfigured_coding_agent_driver_missing_spawn:<name>.
• Config consumption: model env prefixes --model <value> onto defaultCliSubprocessArgs; timeout env sets timeoutMs when a positive integer.
• Lazy driver construction (feat(miner-hands): resolve concrete CLI/SDK providers in the CodingAgentDriver factory #4593 fix): runCodingAgentAttempt uses createNoopCodingAgentDriver() when !codingAgentModeExecutes(mode), so dry-run/paused attempts with claude-cli/codex-cli never require spawn/query deps (matches coding-agent-driver.md lifecycle).
• No default spawn in engine: real child_process wiring stays in the miner package; tests always inject fakes.

Changes

Area	Change
packages/gittensory-engine/src/miner/driver-factory.ts	Full factory: registry, config map, fallback resolution, lazy mode-aware driver pick
packages/gittensory-engine/src/miner/cli-subprocess-driver.ts	Export defaultCliSubprocessArgs for factory argv prefixing
packages/gittensory-engine/src/index.ts	Export new symbols
packages/gittensory-miner/docs/coding-agent-driver.md	Updated registry + lifecycle diagram
Tests	test/unit/coding-agent-miner.test.ts, packages/gittensory-engine/test/driver-factory.test.ts

Test plan

• Valid provider names resolve (noop, claude-cli, codex-cli, agent-sdk)
• Unknown provider rejected (deny-by-default)
• Model env consumed in CLI argv (claude vs codex keys isolated)
• Timeout env consumed / invalid values fall back to 120s default
• Missing spawn fail-closed for CLI providers (live construction only)
• Primary-then-fallback via resolveFirstConfiguredCodingAgentDriverName
• runCodingAgentAttempt dry_run with claude-cli, no spawn — shadow event, no throw
• runCodingAgentAttempt live claude-cli end-to-end with model env
• npm run test:ci before push
• Engine package test suite after tsc

Notes

• Provider names are claude-cli/codex-cli (not cli-subprocess) to mirror self-host's claude-code/codex naming.
• Per-repo overrides (.gittensory-miner.yml) remain a follow-up — env-only for now; firstConfiguredEnvValue helper is in place for when that lands.

[superagent-security]

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

[gittensory-orb]

Tip

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✅ Gittensory review result - approve/merge recommended

_{Review updated: 2026-07-10 08:40:45 UTC}

7 files · no blockers · readiness 96/100 · CI green · clean

✅ Suggested Action - Approve/Merge

• safe to merge

Signal	Result	Evidence
Code review	✅ No blockers	No AI review summary
Linked issue	✅ Linked	#4289
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 (draft PR; 1 linked issue).
Validation posture	✅ 25/25	PR body includes validation/test evidence.
Contributor workload	✅ 10/10	Author activity: 138 registered-repo PR(s), 85 merged, 25 issue(s).
Contributor context	✅ Confirmed Gittensor contributor	andriypolanski; Gittensor profile; 138 PR(s), 25 issue(s).
Gate result	✅ Passing	No configured blocker found.

Linked issue satisfaction

Addressed
The PR adds driver-factory.ts's CODING_AGENT_DRIVER_NAMES/CODING_AGENT_DRIVER_CONFIG_ENV mirroring the referenced ai-config.ts pattern, wires claude-cli/codex-cli/agent-sdk with deny-by-default unknown-name and missing-spawn fail-closed errors, and adds resolveFirstConfiguredCodingAgentDriverName for primary-then-fallback selection, with unit tests covering a valid provider, an unknown/rejected pr

Review context

• Author: andriypolanski
• 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: 138 PR(s), 25 issue(s).
• PR-specific overlap: none found.

Contributor next steps

• Mark ready when done.

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.

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

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.11%. Comparing base (efcd25d) to head (ec525fe).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4633   +/-   ##
=======================================
  Coverage   94.11%   94.11%           
=======================================
  Files         432      432           
  Lines       38348    38373   +25     
  Branches    13979    13990   +11     
=======================================
+ Hits        36091    36116   +25     
  Misses       1600     1600           
  Partials      657      657           

Files with missing lines	Coverage Δ
...ttensory-engine/src/miner/cli-subprocess-driver.ts	100.00% <100.00%> (ø)
...ages/gittensory-engine/src/miner/driver-factory.ts	100.00% <100.00%> (ø)

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[gittensory-orb]

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