Fix documentation inconsistencies and bump document versions

Claude/AGENTS.md

@@ -1,6 +1,6 @@
 # AI Agents - Project Rules
 
-**Document Version:** v5 (independent, incremented on structural changes)
+**Document Version:** v6 (independent, incremented on structural changes)
 
 Language-agnostic rules for AI assistants (Claude Code, Cursor, Copilot, etc.).
 
@@ -68,6 +68,13 @@ Where this file and a design document disagree, **the design document wins**.
 - **Never commit shared documentation** (`AGENTS.md`, `DESIGN_DOCUMENT*.md`) — it comes from the documentation repository, not from the project
 - `README.md`, `PROJECT.md` and `CHANGELOG.md` **are committed** — they are project-specific
 
+### Commit messages
+
+- **Never sign commits with AI authorship** — no `Co-Authored-By: Claude` (or any other assistant), no "Generated with …" line, no tool name or emoji footer. The same applies to pull request descriptions and issue comments.
+- The commit author is the human running the tool; the message describes the change, nothing else
+- Single-line verbal style — "Add X", "Fix Y", "Refactor Z" — never a filename-style message
+- Written in English
+
 ## Versioning
 
 - Follow semantic versioning (MAJOR.MINOR.PATCH)

Claude/CLAUDE.md

@@ -1,10 +1,12 @@
+# CLAUDE.md
 
 ## First-time setup
 
 **At the start of every new session, read all of the following files before doing anything else:**
 
 - `CLAUDE.md` (this file)
+- `README.md`
 - `AGENTS.md`
 - `PROJECT.md`
 - `CHANGELOG.md`
-- `DESIGN_DOCUMENT*.md` (`DESIGN_DOCUMENT.md`, `DESIGN_DOCUMENT_MODULE.md`, `DESIGN_DOCUMENT_LIB.md` or `DESIGN_DOCUMENT_GODOT.md`)
+- `DESIGN_DOCUMENT*.md` (`DESIGN_DOCUMENT.md`, `DESIGN_DOCUMENT_MODULE.md`, `DESIGN_DOCUMENT_LIB.md` or `DESIGN_DOCUMENT_GODOT.md`)

Claude/skills/changelog/SKILL.md

@@ -1,6 +1,8 @@
 ---
 name: changelog
 description: Updates changelog in project
+metadata:
+  version: v2
 ---
 
 Take known info and make changes to CHANGELOG.md to make them up-to-date.

Claude/skills/check/SKILL.md

@@ -1,5 +1,7 @@
 ---
 name: check
 description: Check for failed tests
+metadata:
+  version: v1
 ---
 Try running tests and investigate failed results

Claude/skills/commit/SKILL.md

@@ -1,6 +1,8 @@
 ---
 name: commit
 description: Updates changelog and proposes a concise verbal git commit message
+metadata:
+  version: v2
 ---
 
 1. Run the changelog skill: read git log and staged changes, then update CHANGELOG.md accordingly (same as /changelog).
@@ -9,4 +11,5 @@ description: Updates changelog and proposes a concise verbal git commit message
    - Concise, verbal style — e.g. "Add X", "Fix Y", "Refactor Z"
    - NOT filename-style — never "update_something.py" or "changes to foo"
    - In English
+   - **No AI authorship** — never append `Co-Authored-By: Claude`, a "Generated with …" line, or any tool signature or emoji footer. The same applies to pull request descriptions.
    - Do NOT run git commit — only propose the message and wait for user confirmation.

Claude/skills/documentation/SKILL.md

@@ -1,5 +1,7 @@
 ---
 name: documentation
 description: Updates documentation in project
+metadata:
+  version: v1
 ---
 Create or update documentation of project in docs/ folder. Documentation should contain description of each part of program and documentation of each function. Separate documents for each module. Write in markdown format.

Claude/skills/documentation_context/SKILL.md

@@ -1,6 +1,8 @@
 ---
-name: context
+name: documentation_context
 description: Compress docs/ into CONTEXT.md at project root — minimum tokens, lossless
+metadata:
+  version: v2
 ---
 
 Read every `.md` file in `docs/`. Generate `CONTEXT.md` at the project root.