refactor(wiki): migrate this repo's .wiki/ to canonical Karpathy layout

Stop being inconsistent with our own fixed project-bootstrap template.

- SUMMARY.md → index.md (catalog by type, with one-line hooks)
- source/*.md → concepts/*.md (with `git mv` so history is preserved)
- WORKFLOW.md removed (workflow lives in wiki-maintainer, not duplicated here)
- New: .wiki/CLAUDE.md (project schema, Karpathy gist URL pinned at top)
- New: log.md (append-only op log; backfilled with prior decisions)
- New: overview.md (single project intro page)
- New: raw/README.md (immutability note; replaces .gitkeep placeholder)
- Empty .gitkeep added to entities/, packages/, sources/
- Migrated pages got `type: concept` frontmatter

After this, wiki-maintainer reads .wiki/CLAUDE.md → index.md as it expects,
and the layout matches what newly-bootstrapped projects will look like.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.wiki/CLAUDE.md

@@ -0,0 +1,40 @@
+# Wiki Schema — claude-skills
+
+Project-specific wiki conventions. Read this before any wiki operation.
+
+This wiki follows Karpathy's LLM Wiki pattern:
+**https://gist.github.com/karpathy/442a6bf555914893e9891c11519de94f**
+
+The `wiki-maintainer` skill enforces the workflow and file formats. This file overrides the skill where they conflict.
+
+## Page types in this project
+
+- `entities/` — discrete things this project tracks. Reserved for future use (individual skills if they accumulate non-obvious context, tools we adopt).
+- `concepts/` — design decisions, technical gotchas, refactor notes. Most pages live here.
+- `packages/` — currently empty. Would be used if we extract a package (e.g. a CLI) from this repo.
+- `sources/` — one summary per ingested external doc; carries `ingested:` and `raw_path:` frontmatter.
+- `overview.md` — single project-wide overview. Read this first if new to the repo.
+
+## Naming
+
+- `kebab-case.md`, **Latin only**. Transliterate Cyrillic in filenames; keep the original title in the H1 + frontmatter.
+
+## Domain conventions
+
+- Skill-related design notes go in `concepts/<skill-name>-*.md` (e.g. `active-platform-decision.md`).
+- Build / install pipeline notes live in `concepts/build-*.md`.
+- Refactor / re-alignment commits get a `concepts/<what>-realignment.md` page.
+
+## Frontmatter
+
+Minimum:
+
+```yaml
+---
+title: Human-readable title
+type: concept | entity | package | source | overview
+updated: YYYY-MM-DD
+---
+```
+
+`source/` pages also carry `ingested:` and `raw_path:`.

.wiki/SUMMARY.md

@@ -1,11 +0,0 @@
-# Wiki Summary
-
-List of all pages in source/ with one-line descriptions.
-The agent updates this file whenever source/ changes.
-
-## Pages
-
-- [repo-layout.md](source/repo-layout.md) — how the repo is organized: `skills/` sources, `dist/` builds, `scripts/` build & install
-- [build-notes.md](source/build-notes.md) — why `build.ps1` exists, ZIP layout, PowerShell 5.1 backslash gotcha
-- [active-platform-decision.md](source/active-platform-decision.md) — why we made `active-platform` a skill instead of a memory entry
-- [wiki-realignment.md](source/wiki-realignment.md) — fixed `project-bootstrap` to create the Karpathy-canonical wiki layout (`index.md`/`log.md`/schema), not the bogus `SUMMARY.md`+`WORKFLOW.md`

.wiki/WORKFLOW.md

@@ -1,15 +0,0 @@
-# Wiki Workflow
-
-This wiki follows Karpathy's method: knowledge accumulates rather than being re-derived.
-
-## Rules for the agent
-
-- **Before starting work** — read relevant pages from source/
-- **After an important decision** — update or create a page in source/
-- **New raw materials** (links, docs, transcripts) — put in raw/
-- **Processed knowledge** — write as markdown pages in source/
-- **SUMMARY.md** — update whenever a page is added to source/
-
-## Trigger
-
-Skill is activated by the phrase: **use project wiki**

.wiki/concepts/active-platform-decision.md

@@ -1,3 +1,9 @@
+---
+title: "Decision: active-platform skill"
+type: concept
+updated: 2026-04-28
+---
+
 # Decision: `active-platform` skill
 
 _2026-04-28._

.wiki/concepts/build-notes.md

@@ -1,3 +1,9 @@
+---
+title: Build Notes
+type: concept
+updated: 2026-04-28
+---
+
 # Build Notes
 
 Practical gotchas around building `.skill` archives.

.wiki/concepts/repo-layout.md

@@ -1,3 +1,9 @@
+---
+title: Repo Layout & Skill Workflow
+type: concept
+updated: 2026-04-28
+---
+
 # Repo Layout & Skill Workflow
 
 _Decision: 2026-04-28. Approved by Vitya in chat._

.wiki/concepts/wiki-realignment.md

@@ -1,3 +1,9 @@
+---
+title: Wiki realignment to Karpathy canon
+type: concept
+updated: 2026-04-28
+---
+
 # Wiki realignment to Karpathy canon
 
 _2026-04-28._

.wiki/index.md

@@ -0,0 +1,26 @@
+# Wiki Index
+
+Catalog of all wiki pages. One line per page, organized by type. Updated on every ingest / new page.
+
+## Overview
+
+- [overview.md](overview.md) — what claude-skills is, layout, how to navigate
+
+## Entities
+
+<!-- (none yet) -->
+
+## Concepts
+
+- [active-platform-decision.md](concepts/active-platform-decision.md) — why `active-platform` is a skill (not a memory entry); why default = Windows; how it's wired into `project-bootstrap`
+- [build-notes.md](concepts/build-notes.md) — why `build.ps1` exists alongside `build.sh`; PS 5.1 backslash-in-zip gotcha; how to extract a `.skill`
+- [repo-layout.md](concepts/repo-layout.md) — flat `skills/`, committed `dist/`, bash + PowerShell scripts; install model
+- [wiki-realignment.md](concepts/wiki-realignment.md) — fixing `project-bootstrap` to create the Karpathy-canonical wiki layout
+
+## Packages
+
+<!-- (none yet) -->
+
+## Sources
+
+<!-- (none yet) -->

.wiki/log.md

@@ -0,0 +1,20 @@
+# Wiki Log
+
+Append-only operation log. One entry per operation. Format:
+
+```
+## [YYYY-MM-DD] <op> | <one-line description>
+```
+
+Operations: `init`, `ingest`, `query`, `lint`, `refactor`, `decision`.
+
+Parseable: `grep "^## \[" .wiki/log.md | tail -20`.
+
+---
+
+## [2026-04-28] init | bootstrap empty wiki via project-bootstrap (old layout)
+## [2026-04-28] decision | repo-layout — flat `skills/`, committed `dist/`, bash + PS scripts
+## [2026-04-28] decision | build-notes — PS 5.1 Compress-Archive backslash bug; build.ps1 via .NET ZipArchive
+## [2026-04-28] decision | active-platform — skill chosen over global CLAUDE.md / project memory; default Windows; wired into project-bootstrap
+## [2026-04-28] refactor | wiki-realignment — fixed project-bootstrap Step 3 to create Karpathy-canonical layout
+## [2026-04-28] refactor | this repo's `.wiki/` migrated to canonical layout (SUMMARY.md→index.md, source/→concepts/, added log.md/overview.md/CLAUDE.md schema, raw/README.md)

.wiki/overview.md

@@ -0,0 +1,29 @@
+---
+title: claude-skills overview
+type: overview
+updated: 2026-04-28
+---
+
+# claude-skills — overview
+
+Joint workshop where Vitya and Claude develop, test, and store Claude skills. Both editable sources (`skills/<name>/`) and built archives (`dist/<name>.skill`) live here, so a fresh machine can clone the repo and install every personal skill in one command.
+
+## Components
+
+- **`skills/`** — editable skill sources, one folder per skill (each with `SKILL.md` + optional `assets/`).
+- **`dist/`** — built `.skill` archives, committed so installs don't need a build toolchain on the target.
+- **`scripts/`** — `build.sh` / `build.ps1` (zip sources → archive), `install.sh` (copy sources → `~/.claude/skills/`).
+- **`.wiki/`** — Karpathy LLM Wiki for design decisions and gotchas. See [CLAUDE.md](CLAUDE.md) for schema.
+- **`.tasks/`** — task board (`STATUS.md`).
+- **`CLAUDE.md`** — repo-level agent instructions (skill triggers).
+
+## Where to look
+
+- New here? → [concepts/repo-layout.md](concepts/repo-layout.md), then `README.md`.
+- Working on a skill? → edit `skills/<name>/`, then `bash scripts/install.sh <name>` (or `pwsh scripts/build.ps1 <name>` to refresh the archive).
+- Tracking work? → [.tasks/STATUS.md](../.tasks/STATUS.md).
+- Made a non-trivial decision? → add a `concepts/<topic>.md` page, link from [index.md](index.md), append a line to [log.md](log.md).
+
+## Cross-references
+
+This page intentionally stays short. The substantive material lives in `concepts/` (decisions, gotchas) and the [index](index.md) catalog.

.wiki/raw/README.md

@@ -0,0 +1,13 @@
+# Raw Sources
+
+**Immutable.** Read, never edit. The only allowed modification is appending a `> Status:` blockquote when the user explicitly asks for a status audit.
+
+Place raw inputs here — articles, transcripts, PDFs, screenshots — exactly as they came in. The agent reads from `raw/`, writes summaries into `../sources/`, and never modifies raw files.
+
+For large or path-sensitive sources outside the repo, register them here:
+
+```
+- short-name → /absolute/path/to/source
+```
+
+Currently: no raw sources yet.