> For the complete documentation index, see [llms.txt](https://ai-os-and-trend-finder.gitbook.io/ai-os-and-trend-finder-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ai-os-and-trend-finder.gitbook.io/ai-os-and-trend-finder-docs/.spec_system/archive/sessions/phase29-session15-pre-run-estimate/implementation-notes.md). # Implementation Notes **Session ID**: `phase29-session15-pre-run-estimate` **Started**: 2026-06-21 04:52 **Last Updated**: 2026-06-21 05:15 *** ## Session Progress | Metric | Value | | ------------------- | ------- | | Tasks Completed | 20 / 20 | | Estimated Remaining | 0 hours | | Blockers | 0 | *** ## Task Log ### 2026-06-21 - Session Start **Environment verified**: * [x] Prerequisites confirmed * [x] Tools available * [x] Directory structure ready *** ### Task T001 - Verify Phase 28 spend-accounting and scheduler-status prerequisites are available **Started**: 2026-06-21 04:52 **Completed**: 2026-06-21 04:52 **Duration**: 1 minute **Notes**: * Verified the current session stub and deterministic state output before changing the prerequisite checkbox. * Confirmed the spend-accounting and scheduler-status files are present. * Noted the specification names the prerequisite as Phase 28, while state history records the delta-aware spend-accounting session under Phase 24 and later Phase 28 spend-accounting follow-up work under direct source adapters. **Files Changed**: * `.spec_system/PRD/phase_29/session_15_pre_run_estimate.md` - marked prerequisite availability complete. ### Task T002 - Inspect current scheduler, run-control, and generated-data estimate paths **Started**: 2026-06-21 04:52 **Completed**: 2026-06-21 04:53 **Duration**: 1 minute **Notes**: * Inspected script spend accounting helpers, scheduler status projection, the token-gated scheduler bridge, browser schema parsing, view-model formatting, scheduler first-run UI, manual run-control UI, trends view mount, fixtures, and focused tests. * Confirmed existing `recurringSpend` is already additive on scheduler status and must remain compatible while a separate `preRunEstimate` is added. * Confirmed scheduler bridge reads browser-safe `parseTrendFinderData(data).spend` from live data and already emits no-store JSON headers. * Reviewed relevant ADRs for static extension boundaries and no new runtime/model dependencies. **Files Changed**: * `.spec_system/specs/phase29-session15-pre-run-estimate/implementation-notes.md` - recorded current data-flow findings. ### Task T003 - Record focused validation commands for script, component, payload, and privacy checks **Started**: 2026-06-21 04:53 **Completed**: 2026-06-21 04:53 **Duration**: 1 minute **Notes**: * Focused tests: `bun x vitest run scripts/extensions/trend-finder/__tests__/spend-accounting.test.ts scripts/lib/__tests__/trend-finder-scheduler-status.test.ts scripts/lib/__tests__/trend-finder-scheduler-status-bridge.test.ts src/extensions/trend-finder/components/__tests__/scheduler-status.test.tsx` * Type checks: `bun run typecheck:scripts` and `bun run typecheck` * Payload check: `bun run scripts/extensions/trend-finder/measure-payload-size.ts src/data/live-data.example.json --threshold-kb=1024 --json` * Private artifact check: `bun run runtime:check-private` * Targeted privacy scan: `rg -n "(/home/|\\\\|\\.env|api[_ -]?key|token|secret|password|auth\\.json|dataset|actor[_ -]?id|Bearer|sk-[A-Za-z0-9_-]{8,})" ` with intentional redaction patterns reviewed rather than counted as leaks. * Formatting and ASCII/LF checks: scoped `bun x prettier --check ` plus `.spec_system/scripts/common.sh` `validate_ascii` for every touched source, test, doc, and spec artifact. **Files Changed**: * `.spec_system/specs/phase29-session15-pre-run-estimate/implementation-notes.md` - recorded validation command plan. ### Task T004 - Extend bounded pre-run spend and cadence helper contracts with unavailable and no-cost states **Started**: 2026-06-21 04:54 **Completed**: 2026-06-21 04:56 **Duration**: 2 minutes **Notes**: * Added `TrendFinderPreRunSpendEstimate` and state constants to the script spend-accounting helper. * Added `buildPreRunSpendEstimate` with bounded money/count values, cadence projection state, explicit unavailable handling for absent or zero-source spend, and explicit $0 only for no paid source spend. * Preserved existing `aggregateSpendSummaries`, cadence projection, and actual/estimated run summary behavior. **Files Changed**: * `scripts/extensions/trend-finder/spend-accounting.ts` - added pre-run spend/cadence estimate contract and builder. **BQC Fixes**: * Contract alignment: Kept actual spend summaries unchanged and made pre-run missing-cost states unavailable instead of inferring zero spend. **Validation**: * `bun x vitest run scripts/extensions/trend-finder/__tests__/spend-accounting.test.ts` - PASS. ### Task T005 - Add script-side pre-run estimate interfaces and projection builder with safe duration and source-count labels **Started**: 2026-06-21 04:56 **Completed**: 2026-06-21 04:58 **Duration**: 2 minutes **Notes**: * Added script-side pre-run estimate interfaces, wall-clock state/source types, and an exported `buildTrendFinderPreRunEstimate` builder. * Derived source-count labels from bounded source counters and wall-clock labels only from sanitized successful/degraded latest-run duration. * Added `preRunEstimate` to the scheduler status state as an additive payload field. **Files Changed**: * `scripts/lib/trend-finder-scheduler-status.ts` - added pre-run estimate payload types, builder, and scheduler status output. **BQC Fixes**: * Error information boundaries: Wall-clock estimates use sanitized latest-run duration only and do not expose scheduler paths, logs, command output, or raw runner metadata. * Contract alignment: The new payload is additive and keeps `recurringSpend` intact for existing consumers. **Validation**: * `bun x vitest run scripts/lib/__tests__/trend-finder-scheduler-status.test.ts` - PASS. ### Task T018 - Write browser schema, view-model, and component tests for estimate defaults and rendered copy **Started**: 2026-06-21 05:10 **Completed**: 2026-06-21 05:11 **Duration**: 1 minute **Notes**: * Added legacy payload default assertion for unavailable `preRunEstimate`. * Added configured paid-source, public no-cost, and missing-cost view-model assertions. * Added scheduler panel rendered-copy assertions for configured estimate metrics. * Adjusted expectations to the existing money formatter, which displays `10.575` as `$10.57`. **Files Changed**: * `src/extensions/trend-finder/components/__tests__/scheduler-status.test.tsx` - added browser schema, view-model, and rendered-copy estimate tests. **Validation**: * `bun x vitest run src/extensions/trend-finder/components/__tests__/scheduler-status.test.tsx` - PASS. ### Task T019 - Write bridge test proving safe pre-run estimate payload and no private path or token leakage **Started**: 2026-06-21 05:11 **Completed**: 2026-06-21 05:12 **Duration**: 1 minute **Notes**: * Extended the scheduler status bridge safe-header test to write a sanitized successful latest-run state. * Asserted bridge JSON includes `preRunEstimate` spend, cadence, source-count, and wall-clock fields. * Asserted response body excludes tmp paths, `Bearer`, `.env.local`, and `auth.json`. **Files Changed**: * `scripts/lib/__tests__/trend-finder-scheduler-status-bridge.test.ts` - added pre-run estimate bridge and leakage assertions. **Validation**: * `bun x vitest run scripts/lib/__tests__/trend-finder-scheduler-status-bridge.test.ts` - PASS. ### Task T006 - Add browser schema defaults and types for legacy-safe pre-run estimate parsing **Started**: 2026-06-21 04:58 **Completed**: 2026-06-21 04:59 **Duration**: 1 minute **Notes**: * Added browser enums, defaults, schemas, and inferred types for `preRunEstimate`. * Added `preRunEstimate` to `DEFAULT_TREND_FINDER_SCHEDULER_STATUS` and `TrendFinderSchedulerStatusSchema`. * Defaults intentionally use an unavailable state so legacy payloads do not imply zero spend. **Files Changed**: * `src/extensions/trend-finder/scheduler-status.ts` - added legacy-safe pre-run estimate schema/default/type support. **BQC Fixes**: * Contract alignment: Parser-backed defaults keep old scheduler payloads valid. * Error information boundaries: Browser schema bounds labels, counts, money, duration, and strips unknown fields. **Validation**: * `bun x vitest run src/extensions/trend-finder/components/__tests__/scheduler-status.test.tsx` - PASS. ### Task T013 - Thread scheduler estimate data into the Trends view run-control mount without breaking compact layout **Started**: 2026-06-21 05:05 **Completed**: 2026-06-21 05:06 **Duration**: 1 minute **Notes**: * Passed `parsed.schedulerStatus.preRunEstimate` into the compact Trends view run-control mount. * Kept the existing compact variant and dashboard layout structure intact. **Files Changed**: * `src/extensions/trend-finder/views/trends-view.tsx` - threaded scheduler estimate data into `TrendRunControl`. **BQC Fixes**: * Contract alignment: Trends view uses the parsed scheduler status contract rather than reading raw scheduler data directly. **Validation**: * `bun run typecheck` - PASS. ### Task T015 - Update Trend Finder pipeline documentation to describe implemented pre-run estimate semantics **Started**: 2026-06-21 05:07 **Completed**: 2026-06-21 05:08 **Duration**: 1 minute **Notes**: * Documented scheduler status `preRunEstimate` as an additive browser-safe projection. * Clarified that the estimate is planning transparency only and does not enforce or imply a hard spend cap. * Documented missing-cost, explicit no-cost, cadence, and wall-clock fallback semantics. **Files Changed**: * `docs/extensions/trend-finder-pipeline.md` - documented pre-run estimate data semantics and privacy boundary. **Validation**: * `bun x prettier --check docs/extensions/trend-finder-pipeline.md` - PASS. ### Task T016 - Update Trend Finder UI surfaces documentation to describe scheduler and run-control estimate placement **Started**: 2026-06-21 05:08 **Completed**: 2026-06-21 05:09 **Duration**: 1 minute **Notes**: * Documented scheduler first-run estimate placement before cadence controls. * Documented Trend Run Control compact/full estimate placement before manual run action and runtime/source readiness. * Clarified that scheduler estimate fallback states do not block manual runs by themselves. **Files Changed**: * `docs/extensions/trend-finder-ui-surfaces.md` - documented pre-run estimate UI placement and fallback behavior. **Validation**: * `bun x prettier --check docs/extensions/trend-finder-ui-surfaces.md` - PASS. ### Task T017 - Write script-side tests for missing-cost, configured paid-source, public no-cost, and cadence-unavailable estimates **Started**: 2026-06-21 05:09 **Completed**: 2026-06-21 05:09 **Duration**: 1 minute **Notes**: * Added scheduler status tests for configured paid-source estimate projection, missing-cost unavailable state, public no-cost $0 projection, and cadence-unavailable monthly projection. * Verified latest-run duration contributes only through the safe pre-run wall-clock payload. **Files Changed**: * `scripts/lib/__tests__/trend-finder-scheduler-status.test.ts` - added focused pre-run estimate script-side cases. **Validation**: * `bun x vitest run scripts/lib/__tests__/trend-finder-scheduler-status.test.ts` - PASS. ### Task T014 - Refresh fixture scheduler statuses with configured paid-source, public no-cost, and missing-cost estimate examples **Started**: 2026-06-21 05:06 **Completed**: 2026-06-21 05:07 **Duration**: 1 minute **Notes**: * Added configured mixed paid-source pre-run estimate data to `CONFIGURED_SCHEDULER_STATUS`. * Added `PUBLIC_NO_COST_SCHEDULER_STATUS` with explicit $0 no paid source estimate data. * Added `MISSING_COST_SCHEDULER_STATUS` with unavailable spend and wall-clock estimate data. **Files Changed**: * `src/extensions/trend-finder/fixtures.ts` - refreshed scheduler fixture estimate examples. **BQC Fixes**: * Contract alignment: Fixtures now exercise paid, no-cost, and missing-cost payload shapes. **Validation**: * `bun run typecheck` - PASS. ### Task T011 - Render pre-run estimate metrics in scheduler first-run panel with explicit loading, empty, error, and offline states **Started**: 2026-06-21 05:03 **Completed**: 2026-06-21 05:04 **Duration**: 1 minute **Notes**: * Added a scheduler pre-run estimate block above cadence controls with spend, cadence, wall-clock, and estimate-basis metrics. * Added loading, error, offline, and unavailable summary copy distinct from the existing scheduler bridge banner. * Fixed an initial duplicate error-text test failure by keeping the estimate error detail distinct from the bridge error banner. **Files Changed**: * `src/extensions/trend-finder/components/scheduler-first-run-panel.tsx` - rendered pre-run estimate metrics and fallback states. **BQC Fixes**: * Failure path completeness: Estimate loading, error, offline, and empty states render explicit messages instead of blank metric blocks. * Accessibility and platform compliance: The estimate block has an aria label from the sanitized view model. **Validation**: * `bun x vitest run src/extensions/trend-finder/components/__tests__/scheduler-status.test.tsx` - PASS after duplicate error-text fix. ### Task T012 - Render pre-run estimate metrics in Trend Finder run control with duplicate-trigger prevention while in-flight **Started**: 2026-06-21 05:04 **Completed**: 2026-06-21 05:05 **Duration**: 1 minute **Notes**: * Added pre-run estimate rendering to compact and full Trend Run Control layouts. * Added props for scheduler estimate availability and error state. * Added a click guard so disabled, busy, or already-running controls do not trigger another run. **Files Changed**: * `src/extensions/trend-finder/components/trend-run-control.tsx` - rendered estimate metrics and added duplicate-trigger prevention. **BQC Fixes**: * Duplicate action prevention: The run click handler exits before effects or network work when the run is disabled, busy, or already running. * Failure path completeness: Run control now renders loading/error/offline/unavailable estimate states from the readiness model. **Validation**: * `bun x vitest run src/extensions/trend-finder/components/__tests__/scheduler-status.test.tsx` - PASS. ### Task T009 - Populate scheduler status pre-run estimate from spend summary, selected cadence, and safe latest-run duration **Started**: 2026-06-21 05:02 **Completed**: 2026-06-21 05:02 **Duration**: 1 minute **Notes**: * Confirmed scheduler status builds `preRunEstimate` from live spend summary, selected daily cadence, and latest successful run duration. * Direct projection check produced `perRunUsd: 0.05`, `monthlyUsd: 1.5`, `runsPerMonth: 30`, and a `2m 05s` wall-clock label from safe latest-run duration. **Files Changed**: * `scripts/lib/trend-finder-scheduler-status.ts` - pre-run estimate population is wired into status output. **BQC Fixes**: * Trust boundary enforcement: Latest-run trigger/log/path details are not part of the pre-run estimate; only bounded counters, money, cadence labels, and duration reach the payload. **Validation**: * `bun -e ''` - PASS. ### Task T010 - Preserve recurring spend and post-run actual-spend labels while adding additive estimate output **Started**: 2026-06-21 05:02 **Completed**: 2026-06-21 05:02 **Duration**: 1 minute **Notes**: * Confirmed the view model keeps `recurringSpendLabel` and `recurringSpendDetail` unchanged while exposing the additive `preRunEstimate` model. * Existing focused assertions still expect `$1.5 / month` and `$0.05 per run x 30 runs/month`. **Files Changed**: * `src/extensions/trend-finder/view-model.ts` - additive estimate output is attached without replacing recurring spend labels. **BQC Fixes**: * Contract alignment: Existing recurring spend consumers and labels remain stable. **Validation**: * `bun x vitest run src/extensions/trend-finder/components/__tests__/scheduler-status.test.tsx` - PASS. ### Task T008 - Add optional pre-run estimate presentation to run-control models with disabled and offline fallback behavior **Started**: 2026-06-21 05:00 **Completed**: 2026-06-21 05:02 **Duration**: 2 minutes **Notes**: * Added run-control pre-run estimate availability states for ready, loading, error, offline, and unavailable. * Added `buildTrendRunPreRunEstimatePresentation` and attached the presentation to `TrendRunReadiness`. * Kept scheduler-estimate failures non-blocking for manual run readiness. **Files Changed**: * `src/extensions/trend-finder/run-control.ts` - added optional pre-run estimate presentation model and fallback states. **BQC Fixes**: * Failure path completeness: Loading, error, offline, and unavailable scheduler-estimate states now have explicit caller-visible labels. * State freshness on re-entry: The model accepts current availability and error state each time readiness is rebuilt. **Validation**: * `bun x vitest run src/extensions/trend-finder/components/__tests__/scheduler-status.test.tsx` - PASS. ### Task T007 - Add pre-run estimate labels, tones, and duration formatting with exhaustive enum handling **Started**: 2026-06-21 04:59 **Completed**: 2026-06-21 05:00 **Duration**: 1 minute **Notes**: * Added pre-run estimate metric/view-model types and `buildTrendFinderPreRunEstimateViewModel`. * Added explicit tone handling for estimate and wall-clock states using existing `assertNever` exhaustive checks. * Kept existing `recurringSpendLabel` and `recurringSpendDetail` behavior unchanged. **Files Changed**: * `src/extensions/trend-finder/view-model.ts` - added pre-run estimate formatting, metrics, tones, and scheduler view-model projection. **BQC Fixes**: * Contract alignment: Pre-run UI labels are generated from typed scheduler status fields and old recurring spend fields remain unchanged. * Error information boundaries: Display text passes through existing redaction/sanitization before rendering. **Validation**: * `bun x vitest run src/extensions/trend-finder/components/__tests__/scheduler-status.test.tsx` - PASS. ### Task T020 - Run focused tests, payload measurement, privacy scan, and ASCII validation **Started**: 2026-06-21 05:12 **Completed**: 2026-06-21 05:15 **Duration**: 3 minutes **Notes**: * Ran focused script, bridge, and browser tests for the pre-run estimate path. * Ran script and app type checks. * Ran payload budget measurement, private runtime artifact check, targeted privacy scan, scoped Prettier, and ASCII/LF validation. * Created `validation.md` with command evidence and residual browser-manual risk. * Validate rerun found a mobile Trend Finder route regression where the compact pre-run estimate pushed the polarity grid below the first viewport; compact run-control estimates now render as an inline strip on mobile and the focused Playwright route passes. **Files Changed**: * `.spec_system/specs/phase29-session15-pre-run-estimate/validation.md` - recorded validation results and BQC review. * `.spec_system/specs/phase29-session15-pre-run-estimate/security-compliance.md` - recorded targeted security and GDPR review. * `.spec_system/specs/phase29-session15-pre-run-estimate/tasks.md` - marked all tasks and completion checklist complete. * `.spec_system/specs/phase29-session15-pre-run-estimate/implementation-notes.md` - recorded final validation log entry. * `src/extensions/trend-finder/components/trend-run-control.tsx` - compacted mobile pre-run estimate presentation after browser validation caught a layout regression. **BQC Fixes**: * Failure path completeness: Validation confirmed loading, error, offline, unavailable, no-cost, and missing-cost paths have explicit test or component coverage. * Error information boundaries: Validation confirmed bridge and schema boundaries remain bounded and leak-safe. **Validation**: * `bun x vitest run scripts/extensions/trend-finder/__tests__/spend-accounting.test.ts scripts/lib/__tests__/trend-finder-scheduler-status.test.ts scripts/lib/__tests__/trend-finder-scheduler-status-bridge.test.ts src/extensions/trend-finder/components/__tests__/scheduler-status.test.tsx` - PASS. * `bun run typecheck:scripts` - PASS. * `bun run typecheck` - PASS. * `bun run scripts/extensions/trend-finder/measure-payload-size.ts src/data/live-data.example.json --threshold-kb=1024 --json` - PASS. * `bun run runtime:check-private` - PASS. * Targeted privacy scan over session-touched files - PASS after reviewed intentional matches. * Scoped `bun x prettier --check ` - PASS. * `.spec_system/scripts/common.sh` `validate_ascii ` - PASS. --- # Agent Instructions This documentation is published with GitBook. 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