Repository source: docs/plans/qdb_build_time/qdb_build_time_debug_log.md
Cycle: v3/qdb_build_time Debug mode: enabled Entry: 2026-10-30 UTC, Step 1 handoff
Necessary/useful instructions
Source: Step 1 scope comparison and project principles. Observation: Separated avoiding eager profile artifacts from removing underlying identity/trust data. Offered runtime delivery with explicit static-only retention and unchanged other-site defaults. Suggestion: Preserve functionality and profile fallback as acceptance requirements.
Source: Effort estimation and evidence boundaries. Observation: Recorded initial source exposure and independently scoped whole-cycle alternatives; combined option exceeds 1.0 and recommends a split. Production timing establishes two phase costs but not the profile cost. Suggestion: Do not convert file-count share into a wall-time saving claim.
Redundant/unnecessary instructions
No supported findings.
Inapplicable instructions
Source: Step 4 implementation and runtime verification. Observation: Assessment/source investigation only; no new execution or application edits. Suggestion: Keep implementation and production deployment approvals separate.
Uncertain assessments
Source: Step 1 recommendation. Observation: Profile skipping removes thousands of artifact writes but time saving is not yet measured; large commit reuse may materially change the relative priorities. Suggestion: Compare unchanged-fixture before/after timings and preserve full rebuild/output parity.
— Codex · 2026-10-30 UTC
Step 1 selection revision — 2026-10-30 UTC
Necessary/useful instructions
Source: Step 1 review/revision and effort-estimation score semantics. Observation: User selected combined C after the split recommendation. Updated active scope to v2/C and preserved v1/A; a value above 1.0 prompts discussion rather than automatically vetoing the selection. Stage/day sizing still applies before implementation. Suggestion: Distinguish option selection from approval to advance.
Redundant/unnecessary instructions
No supported findings.
Inapplicable instructions
Source: Implementation verification. Observation: Selection-only revision; no application edits or runtime testing. Suggestion: Keep subsequent approval gates intact.
Uncertain assessments
Source: Stage sizing. Observation: Whether combined C fits the normal stage/day limit is unresolved until development planning. Suggestion: Replan before implementation if it cannot fit, preserving the selected scope and history.
— Codex · 2026-10-30 UTC
Step 2 handoff — 2026-10-30 UTC
Necessary/useful instructions
Source: Step 2 recovery, known environment and shared component inventory. Observation: Requirements preserve runtime and static-only profile delivery, existing flag semantics, history/evidence parity and the prior valid release. Host measurements remain distinct from local fixtures. Suggestion: Retain both mode-transition and history parity gates.
Source: Measurable success criteria and scope protection. Observation: Require separate comparable timing runs for all three targets and bounded memory, without guessing a new production completion time. Combined 1.25 scope still requires stage/day feasibility review. Suggestion: Define fixtures and tolerances before optimizing, preserving failed or noisy results.
Redundant/unnecessary instructions
No supported findings.
Inapplicable instructions
Source: Step 4 commits and acceptance execution. Observation: Requirements only; no runtime edits, benchmarks or deployment. Suggestion: Preserve later approval gates.
Uncertain assessments
Source: Step 2 size and performance outcomes. Observation: Relative profile/history savings and combined implementation size remain unknown; the provided log lacks a profile-phase timer. Suggestion: Resolve algorithm and fixture feasibility at Step 3 rather than implying the 99.3-percent file share predicts time saved.
— Codex · 2026-10-30 UTC
Step 3 handoff — 2026-10-30 UTC
Necessary/useful instructions
Source: Step 3 Key Risks, atomic stages and shared contracts. Observation: Combined C retained with eight bounded stages. Legacy commit/evidence parity is a prerequisite to optimization; operation-local disk-backed scratch avoids simply retaining full manifests across PHP batches. Suggestion: Keep semantic and resource gates ahead of combined performance claims.
Source: Known environment and effort snapshots. Observation: Fixed local fixtures, repeated timing/noise comparison and profile runtime budget before coding; host replay is separate. Original cycle and stage estimates remain non-additive judgments. Suggestion: Retain inconclusive results and explicit host limitations.
Redundant/unnecessary instructions
No supported findings.
Inapplicable instructions
Source: Step 4 branching, execution and measurements. Observation: Plan only; no code changes, fixtures executed or timings collected for this cycle. Suggestion: Preserve the implementation gate.
Uncertain assessments
Source: Stage sizing and output parity. Observation: Git merge/rename semantics and temporary manifest I/O may require adjustment after frozen-fixture validation. Eight stages exhaust the ordinary ceiling; further work requires replanning rather than an invisible ninth stage. Suggestion: Keep early stop/replan gates and combined-scope preference visible.
Source: One-page guidance versus mandatory stage detail. Observation: Eight required stage contracts and the measurement protocol exceed one printed page; retained flat bullets rather than omitting recovery or acceptance criteria. Suggestion: Treat scanability separately from mandatory evidence fields.
— Codex · 2026-10-30 UTC
Checkpoint: Step 4 Stage 7, 2026-10-30 UTC Observation: S1–S6 committed. Initial matched evidence measurements expose many-small-commit scratch overhead despite exact output parity. Retain all samples; tune only disposable scratch transaction/locking/requested-path retention, preserving journal rollback and bounded memory, then repeat before acceptance. Estimate: S7 original 0.15 retained, revised whole-stage 0.22; independent cycle 1.25 revised 1.35, same v2/C scope, R1/P2, single exposed Codex rater. No measured labor or successful acceptance inferred.
Step 4 handoff — 2026-10-30T21:12:07Z
Necessary/useful instructions
Source: Step 4 planning-only gate, stage boundary protocol and scoped commit requirements. Observation: Planning f526da98 precedes the implementation summary. Eight stage-scoped commits each include their summary update; final stage 1d9ef5b6 includes scoped ledger closeout. Nine commits through closeout verified. Unrelated audit drafts, their ledger entries and prior-cycle host report remain uncommitted. Suggestion: Preserve this separation for subsequent merge/review; no merge or push was performed.
Source: Approved fixed-workload timing, parity, bounded-memory and runtime recovery requirements. Observation: All three fixed targets pass improvement-beyond-range checks, complete output parity and memory budgets. Normal CLI full build activates with exact posts/profiles/activity/commits parity. Final focused suite 80/80; browser profile/control evidence includes JS on/off, phone/desktop and 16 profile themes. Candidate failure/retry and signed/key/missing-history behavior are covered. Initial benchmark failures and scratch regression remain in findings/samples; final tuning preserves savepoint rollback and operation cleanup. Suggestion: Treat the measured fixture outcomes as local evidence, not predicted QDB runtime. Keep the supplemental small-commit overhead and static-hit/runtime latency tradeoff visible.
Source: Dependency approval, human-readable formats and read-model schema guidance. Observation: Zero dependencies; human evidence/configuration records remain plain text. Machine benchmark row streams are comparison artifacts. Core read-model tables and queries are unchanged; schema remains 39. Scratch SQLite settings affect only disposable operation storage. Suggestion: Do not extend scratch durability/locking settings to live or canonical data.
Redundant/unnecessary instructions
No supported findings.
Inapplicable instructions
Source: Production deployment, host replay and merge/push actions. Observation: Not authorized/performed in this cycle; QDB PHP 8.3 access and original build argument list were not supplied. Guidance preserves the operator's existing command/settings and records comparison fields. No full-suite or physical-device outcome is claimed. Suggestion: Keep production timing and maintainer acceptance pending until supplied evidence.
Uncertain assessments
Source: Generalizing local performance and the relative effort study. Observation: Supplemental 1000-small-commit evidence has a 0.0407s/8.7% median overhead; it does not share the large-import speedup. One timing-progress test fails identically in baseline and branch. Entry cycle 1.25, S7 revision/cycle 0.22/1.35, retrospective cycle 1.40 and all stage originals/retrospectives are retained as non-additive judgments, not measured labor. Maintainer fit and acceptance remain pending; no accepted-outcome increment. Suggestion: Review actual QDB corpus/configuration and repeat production timing before judging host benefit; retain these limits in handoff.
Final checks: Planning-only inventory, eight summary-bearing stages, cycle-scoped ledger, local documentation links, syntax, whitespace and dependency inventory verified. Remaining dirty files match the preserved unrelated work.
— Codex · 2026-10-30 UTC