feat(miner): wire attempt-metering.ts into the iterate loop for a real mid-attempt budget abort

[JSONbored]

Closes #5395

Summary

• iterate-loop.ts now accumulates real per-iteration usage (turns, costUsd, and wall-clock time measured around each driver invocation via an injected clock) into attempt-metering.ts's AttemptMeterTotals, and evaluates it every iteration against an optional AttemptBudget. A breach on any axis abandons mid-attempt -- a hard, unconditional stop checked BEFORE self-review even runs, so a same-iteration pass can never bypass it (see "Precedence fix" below).
• attempt-input-builder.js's buildAttemptLoopInput sets that budget from AmsPolicySpec.capLimits -- the same cap ceilings the Governor's cross-cycle GovernorCapUsage already enforces after the fact (loop-cli.js's saveCapUsage between loop cycles). One runaway attempt can no longer burn through the entire cross-cycle budget before anything reacts.
• tokens stays an honest 0 -- no CodingAgentDriver reports a real per-iteration token count today.
• Updated packages/gittensory-miner/docs/coding-agent-driver.md's stale "zero production callers" note.

Precedence fix (per this repo's own review on this PR)

The first version fed a budget breach into iterate-policy.ts's costCeilingReached signal, whose own precedence checks selfReview.kind === "pass" first -- so an iteration that both breached the ceiling and produced a clean self-review would hand off instead of abandoning, silently defeating the point of a mid-attempt abort. Fixed by checking the budget directly in iterate-loop.ts and, on a breach, abandoning before self-review ever runs -- self-review is skipped entirely once the ceiling is breached, since its verdict can no longer change an already-decided outcome.

A note on the wrapper-split refactor

runIterateLoop is now a thin wrapper over an internal runIterateLoopCore. The new finalMeterTotals/budgetBreaches result fields attach once at the wrapper's single always-reached return point, rather than being threaded onto the core's own genuinely-unreachable, /* v8 ignore */-guarded fallback branch. vitest's ignore-comment only suppresses its own text-reporter percentage -- it does not change what's written to the raw lcov Codecov reads -- so putting new fields directly on that branch would have shown as a real, unexercisable uncovered patch line.

Test plan

• tsc --noEmit --incremental false clean (root + packages/gittensory-engine)
• npm run test --workspace @jsonbored/gittensory-engine -- 525/525 passing
• npx vitest run test/unit test/contract -- all passing (excluding 2 pre-existing, environment-specific real-git test files unrelated to this diff)
• Per-file patch coverage verified line-by-line against the diff: 100% on every new/changed line in iterate-loop.ts and attempt-input-builder.js, confirmed via the root vitest suite specifically (the new hard-ceiling-precedence path is exercised through runMinerAttempt's real, unmocked call into runIterateLoop, not just the engine's own node:test suite)
• npm run docs:drift-check / manifest:drift-check / engine-parity:drift-check all clean
• npm audit --audit-level=moderate -- 0 vulnerabilities
• git diff --check clean

[superagent-security]

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

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Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	gittensory-ui	a760181	Commit Preview URL Branch Preview URL	Jul 12 2026, 08:25 PM

[codecov]

Codecov Report

❌ Patch coverage is 89.47368% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 94.52%. Comparing base (cc9080a) to head (a760181).
⚠️ Report is 7 commits behind head on main.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...ckages/gittensory-engine/src/miner/iterate-loop.ts	89.47%	0 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5437      +/-   ##
==========================================
+ Coverage   94.48%   94.52%   +0.03%     
==========================================
  Files         554      554              
  Lines       44450    44467      +17     
  Branches    14662    14668       +6     
==========================================
+ Hits        41999    42032      +33     
+ Misses       1776     1754      -22     
- Partials      675      681       +6     

Flag	Coverage Δ
shard-1	44.08% <5.26%> (-0.02%)	⬇️
shard-2	35.01% <89.47%> (+0.06%)	⬆️
shard-3	31.99% <5.26%> (-0.01%)	⬇️
shard-4	31.69% <5.26%> (-0.01%)	⬇️
shard-5	32.71% <5.26%> (-0.02%)	⬇️
shard-6	43.54% <5.26%> (-0.04%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...ages/gittensory-miner/lib/attempt-input-builder.js	100.00% <ø> (ø)
...ckages/gittensory-engine/src/miner/iterate-loop.ts	73.97% <89.47%> (+9.68%)	⬆️

... and 1 file with indirect coverage changes

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Caution

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🛑 Gittensory review result - fixes required

_{Review updated: 2026-07-12 20:34:32 UTC}

6 files · 1 AI reviewer · no blockers · readiness 100/100 · CI failing · unstable

🛑 Suggested Action - Manual Review

• Touches a guarded path — held for manual review: This PR changes guardrail-protected path(s): packages/gittensory-engine/src/miner/iterate-loop.ts (matched packages/gittensory-engine/**), packages/gittensory-engine/test/iterate-loop.test.ts (matched packages/gittensory-engine/**).

Review summary
This PR wires attempt-metering.ts's accumulateAttemptUsage/evaluateAttemptBudget into iterate-loop.ts for a real mid-attempt budget abort, replacing the never-wired maxTotalTurns field with a richer budget (turns/costUsd/wallClockMs) evaluated every iteration, and threads AmsPolicySpec.capLimits through attempt-input-builder.js so the Governor's cross-cycle caps also bound a single runaway attempt. The wrapper/core split to keep the genuinely-unreachable v8-ignored fallback branch byte-identical is a reasonable, well-explained way to avoid an uncoverable diff line, and the new tests exercise each budget axis plus the pass-wins-over-breach precedence and the omitted-budget no-op case. The wallclock measurement correctly uses an injected clock (`deps.nowMs`) rather than a hardcoded `Date.now()`, keeping it testable.

Blockers

• packages/gittensory-engine/src/miner/iterate-loop.ts:343 feeds the budget breach only as IterationState.costCeilingReached, but iterate-policy.ts handles selfReview.kind === "pass" before costCeilingReached, so a result that exceeds budget can still hand off instead of abandoning; change the precedence so a reached budget ceiling blocks handoff, or give a concrete reason why a hard budget may be exceeded on the successful iteration.

Nits — 7 non-blocking

• packages/gittensory-engine/src/miner/iterate-loop.ts: `evaluateAttemptBudget` is called every iteration inside the loop even when `input.budget === undefined` is already checked (fine), but consider hoisting `nowMs` capture doc comment closer to usage for readability -- minor.
• The `Decide fate of attempt-metering.ts: wire real per-attempt budget enforcement, or remove it #5395` issue-number references sprinkled through comments (iterate-loop.ts:252-253, 385) are fine as traceability but slightly clutter the doc comments; a single top-of-file reference would suffice.
• attempt-input-builder.js:74-79: `budget` always sets all three axes from `capLimits`, so a repo with `capLimits.turns = 0` (if that's a valid config) would abandon on iteration 1 with no turns spent -- worth confirming `capLimits` fields are never legitimately zero/unset.
• Consider whether `AttemptBudgetAxis` breach reporting for multiple simultaneous breaches (e.g. both turns and costUsd over) is intentional array-returning behavior in `evaluateAttemptBudget` -- the doc comment implies it, worth a one-line test covering a multi-axis breach if not already covered by attempt-metering.ts's own test suite.
• The docs update in coding-agent-driver.md accurately reflects the new wiring and removes the stale 'zero production callers' note -- good hygiene, no changes needed.
• PR author also opened the linked issue — Link an issue that was opened by a different contributor, or provide a rationale for why this self-authored issue represents genuine discovery work.
• Touches a guarded path — held for manual review — A maintainer must review and merge this change.

CI checks failing

• codecov/patch — 89.47% of diff hit (target 99.00%)

Signal	Result	Evidence
Code review	✅ No blockers	1 reviewer
Linked issue	✅ Linked	#5395
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: 44 registered-repo PR(s), 36 merged, 435 issue(s).
Contributor context	✅ Confirmed Gittensor contributor	JSONbored; Gittensor profile; 44 PR(s), 435 issue(s).
Gate result	⚠️ Not blocking	Advisory; not blocking this PR.
Improvement	✅ Minor	risk: clean · value: minor — Code changes are accompanied by test evidence.

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: 44 PR(s), 435 issue(s).
• PR-specific overlap: none found.

Contributor next steps

• Treat this as maintainer-lane context rather than normal contributor-lane activity.

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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