# Changelog

## 0.2.0, revision 7 (October 20, 2026)

- Added the October 2025–October 2026 progress chart: merged-PR bars and a commit line on separate zero-based axes, with April execution and October shared-memory milestones.
- Used the common-window October 20 recount for both series, with partial October explicitly labeled and normalized calendar-day rates available in the chart data. Preserved earlier dated audits.
- Updated the homepage and About page with the author's product-building perspective, technical work, personal products and artwork. Made the homepage artwork a full-width gallery link.
- Corrected the subscription version label and synchronized release sources, generated reading views and downloads for publication.

## 0.2.0, revision 6 (October 20, 2026)

- Renamed the canonical page to `/20x-developer-playbook/`, including its full version, framework and reference pages. Old page names redirect permanently with deep paths preserved. Updated navigation, reference links and social-image tooling. Stable `/playbook/v0.2.0/` downloads remain available.
- Reorganized the results around what work got through, what verification stands behind it, and what it cost. Kept review rounds, repair rates and timings in the detailed reference.
- Made counting levels explicit: requested outcomes, implementation units and PRs are distinct. Of 275 merged units, 213 are classified as reviewed with passing tests; 62 have other evidence categories, including 14 flagged units.
- Added a checkable path from requirement through verification, review and integration to acceptance. Highlighted the existing team-memory section and connected its task/evidence links to inspectable completion claims.
- Repaired text encoding in review/cost sources and the standalone builder.

## 0.2.0, revision 5 (October 20, 2026)

- Refreshed complete October 1–19 PR counts: 1,026 authored and 972 merged; independently checked destinations. The October 12–18 week has 770 merges, including 462 internal task-branch merges.
- Added a metric availability audit, aggregate JSON and web report: 275 merged units, 185 fully merged recorded parents, repair incidence, review coverage, elapsed-time proxies and API-equivalent usage. Kept acceptance, human effort, autonomy and memory-only causal uplift explicitly unknown.
- Explained the 20× title as a repeatable accepted-delivery capacity target with a defined baseline, distinct from the approximately 188× raw weekly PR-volume comparison.
- Updated the short/full playbooks, AI measurement guidance, current chart, navigation and downloads. Preserved dated earlier case studies and the existing Agentic Kanban onboarding draft.

## 0.2.0, revision 4 (October 19, 2026)

- Adopted The 20× Developer Playbook title and agreed subtitle, centered on systems built, shared-memory collaboration and experience. 20× remains a goal.
- Preserved revision-3 task costs, review checks and unattended-run findings through October 19, plus the current homepage and artwork.
- Reframed the existing Agentic Kanban pages as a working draft for developer onboarding and community trials; retained their contracts, templates and running/piloting/planned practices.
- Synchronized site labels, metadata, AI guidance and downloads.


## 0.2.0, revision 3 (October 19, 2026)

- New task data, October 1 to 19: pipeline cost per merged task (median $1.35, mean $2.32, 90th percentile $4.87, highest $19.65 across 272 tasks), what review stood behind each merged revision, and how split features finish. Evidence in [task checks](https://hamedtaheri.com/playbook/v0.2.0/evidence/task-checks.json); coordinator excluded.
- Review: "What the records show". The first deep review stopped 1 in 5 PRs while the first ordinary review approved all but one; 146 of 272 merged tasks had a deep review and passing tests on the exact merged revision; 13 (4.8%) were not fully checked. Two gaps named: fix PRs are reviewed on their own diff, and commits that meet review conditions are not re-reviewed. The AI prompt asks for confirmation on the combined revision.
- Review: "never to round three" now reads "not to another fix round", consistent with the round-6 rules.
- Cost: the $5 hard cap is per run; nothing enforces a per-task total yet. New table "October 1 to 19, per task", including about $12.20 per PR landed in the integration branch for the October 16–19 unattended run, coordinator included. Cost per accepted task is still not established.
- The unattended run's totals are final: 81 PRs landed, about $990, about a third of it the coordinator.
- Preparation: of 41 features split into parts, 7 had every part merged.
- PR counts keep their October 15 cutoff; other numbers outside these sections keep October 14.

## 0.2.0, revision 2 (October 19, 2026)

- "Running the board unattended" now covers the whole run, October 17 to 19, about three days: one night alone, then two days with a person dropping in. New rules: a question never blocks the run (ask in plain text with a recommendation and keep working); judgement calls get a peer reviewer from another model family; landing is a serial queue that reruns tests and build on the merged result; a stacked part lands only after its parent; a part that ships a temporary stand-in waits for its successor; know which gate actually runs; plan the person's time, not only the agents'. Three new failure patterns. Still piloting.
- New in the playbook: "When the rounds don't stop", from 108 reviewed pull requests. Review rounds rarely converge on their own; past round 6 only blocking findings get fixed, no hardening the acceptance did not ask for, and size is a reason to stop. The AI prompt says the same.
- Contract: the `unattended` block gains the round-6 rules, a landing queue, the question rule and the peer rule.
- Measurements outside the unattended section unchanged.

## 0.2.0, revision 1 (October 18, 2026)

- New section in the full framework, "Running the board unattended", from one night (October 17 to 18) with a coordinator running the backlog: a never list, rules approved in advance and checked again on the exact revision, a bounded review loop, dependency-aware scheduling with a parallel cap and a budget stop, a two-tier gate for breaking epics into parts, keeping context across compactions, and five failure patterns to avoid. Marked piloting; one night proves little.
- Landing in an integration branch now moves a task to human review, never to done. Spend against a budget counts every ledger that bills, the coordinator included.
- The morning brief folds in the overnight pack: each act taken under a rule, to confirm or undo, and what waits on a person.
- Contract: an `unattended` block (off by default) and the overnight pack in the morning brief. The four-minute version, the AI guide and the FAQ say the same in short.
- Measurements unchanged.

## 0.2.0 (October 16, 2026)

- New: **Agentic Kanban**, the team layer for agent-built software, on top of per-task tools such as Superpowers and Spec Kit: what replaces sprints, standups and velocity; three lanes sized to the change; four ceremonies; four numbers; three questions to start. Four-minute and full versions, a worked example, an AI guide, a machine-readable contract, ceremony templates and a portable skill.
- Starter kit: acceptance with evidence and revision, routine occurrences, attempt records, and `tools/flow.cjs` for the morning brief and weekly report without a model.
- Version 0.1.0 stays online at /playbook/v0.1.0/ for existing links.

## 0.1.0, revision 8 (October 15, 2026)

- PR counts refreshed through October 15, 11:30 p.m. Vancouver, with the same search rules: 455 authored and 431 merged in October, against 154 merged in September. The refresh reproduced the October 14 counts exactly. Commits, sessions and costs keep their October 14 cutoffs.
- Both versions now say what changed and when: April to September brought parallel sessions, sessions that message each other, longer self-checking runs and guardrails; October added shared memory for the agents and scripted pipelines to run them. The chart labels the phases as timing, not separate effects.
- The four-minute version opens on the monthly PR chart. The run-outcomes chart moves under "How the work flows" with a plainer headline.
- Prose no longer quotes running totals that go stale within a day; exact counts stay in the dated charts and evidence tables.
- Added `refresh_prs.py` to repeat the PR refresh; the evidence charts take their October labels and scale from the data.

## 0.1.0, revision 7 (October 15, 2026)

- Reordered the four-minute version around where the work waits: 120 of 206 pipeline runs (October 6–14) ended with an approval only a person could clear. Results now lead with tasks and cost per task rather than commits; caveats sit in one place.
- Moved Personize from the opening to practice 5. Added who reviews the PRs, what this does and doesn't show, and what the fleet vision depends on.
- Full version: role routing and the symptom table come first; the 12-question assessment moves after the practices. Practices 1 and 2 open with what went wrong. Added a copy-ready decision-rounds prompt, an illustrative brief, and "Where developers fit".
- Web visuals: run outcomes, the pipeline with stage costs, four incident cards and the lean-worker comparison. The headline chart shows only my own trend; published per-developer benchmarks stay in the evidence appendix.
- Assessment: output-ambition choices stop at "more than +200%".
- AI guide: removed instructions about when to mention the author; kept the contact. FAQ answers who reviews.
- The starter bundle no longer includes image-generation prompts.
- Measurements unchanged; October 14 cutoffs.

## 0.1.0, revision 6 (October 15, 2026)

- Replaced the seven-checkbox self-check with a six-area, 12-question workflow assessment: delivery, usable capacity, economics, coordination, planning flow and quality.
- Results explain each answer, evidence gaps, a selected bottleneck and practical next tests, with copy/download for the team or its AI. No overall maturity score or promised output multiplier.
- Kept expected additional output separate from observed rates, with an optional comparable-work count ratio and explicit zero/unknown-baseline handling.
- Added the assessment method, interpretation rules and SPACE/DORA context. AI guidance and downloadable material use the same questions.

## 0.1.0, revision 5 (October 15, 2026)

- Added Hamed's journey from early LLM assistance to agent-native development, his product-manager perspective and why Personize became part of the working method.
- Described today's reported use of tens of agents separately from the bold vision of hundreds or thousands working in parallel alongside developers.
- Kept the four-minute version concise while retaining all seven practices, scoped measurements and the prompt for a reader's AI.
- Aligned the full version's preparation, execution, review, cost, memory and learning sections with that motivation.
- Explained the entity-driven memory/governance use case and the current limits that stand between today's runner and the larger fleet vision.
- Updated AI guidance, FAQ and metadata. Existing metrics retain their October 14 cutoffs.

## 0.1.0, revision 4 (October 15, 2026)

- Replaced the origin-story short version with a practical summary of all seven full-playbook sections, scoped results and one prompt to pass to an AI.
- Kept October 14 measurement cutoffs; editing the prose does not refresh the data.
- Clarified the pipeline median: 205 dollar-valued records among 206 runs, including stops; coordinator and unpriced Codex usage excluded. Not every run completed all stages.
- Removed an unsupported link between self-check scores and dollar costs, and labeled the deeper-review budget as an estimate.
- Aligned the AI starting guide, FAQ, navigation and discovery text; corrected the self-check link.
- Aligned the task brief template with the six-field contract and corrected pilot paths, output setup and whole-workflow budgeting.
- Qualified reviewer credential controls, review-subagent hook coverage and separately authorized landing/fix-branch merges.

## 0.1.0, revision 3 (October 14, 2026)

- The 4-minute version is now a story: where it started, six months of pushing, the wall, the turning point (a memory the agents share), what happened next, how the job changed, and why now.
- Headline numbers now follow the journey: commits, sessions and merged PRs, with cost as part of the story.
- Unpublished documents are mentioned only in the full playbook and the AI guides.
- "Book a call" replaces "Compare notes".

## 0.1.0, revision 2 (October 14, 2026)

- New 4-minute version ([summary.md](https://hamedtaheri.com/playbook/v0.2.0/summary.md)) with the seven rules, a real run, a two-minute self-check, a day in the loop and a one-week test.
- Headline now leads with cost per task: about $16 on October 5, a median of $0.67 per pipeline run on October 6–14, and $3.20 per merged PR with the coordinator included.
- New pipeline evidence: 206 runs, outcomes and stage costs ([pipeline-outcomes.json](https://hamedtaheri.com/playbook/v0.2.0/evidence/pipeline-outcomes.json)).
- Section 1 adds the task model, how Superpowers planning becomes tasks, decision rounds, and the shared-table lesson.
- Section 2 adds the coordinator rule, the lean worker settings, a day in the loop, recurring work and operational failures.
- Section 3 adds the nine-round PR and the one-deep-review flow.
- Section 4 adds the nine-day cost timeline, the levers and budget rules.
- Section 5 corrects the concurrency note (the backend supports `expectedVersion`; the queue script doesn't use it yet), and adds people on the board and build-or-use.
- New section 6, guardrails, security and production. Learning moves to section 7. New reference section with a glossary, limits and what's included.
- New AI files: [FAQ](https://hamedtaheri.com/playbook/v0.2.0/agent/faq.md), [pilot guide](https://hamedtaheri.com/playbook/v0.2.0/agent/pilot.md), [build or use](https://hamedtaheri.com/playbook/v0.2.0/agent/build-or-use.md). [start.md](https://hamedtaheri.com/playbook/v0.2.0/agent/start.md) now routes by role.
- Benchmark comparisons, the subscription usage target and the October projection moved from the main page to the [evidence](https://hamedtaheri.com/playbook/v0.2.0/evidence/README.md).
- The runner scripts are available on request.
- The starter bundle no longer includes PNG images; served Markdown uses absolute links.

## 0.1.0 (October 14, 2026)

First working draft: six sections, AI modules, templates, memory starter kit and evidence.