docs: add CONTRIBUTING.md

[okwn]

Summary

Adds CONTRIBUTING.md with development setup and process documentation.

Testing

N/A — documentation only.

---

Summary by cubic

Adds a streamlined CONTRIBUTING.md with quick setup and PR steps, and adds internal docs to map the repo, surface issues, and outline a short-term PR plan.

• Documentation
  • Simplified CONTRIBUTING.md with clone/install/test steps, code style, PR flow, and issue reporting; standardized commands to npm.
  • Added 00_STATE.md (repo overview: structure, CI, tests, open issues).
  • Added 01_REPO_MAP.md (exports map and source/test layout).
  • Added 05_PR_CANDIDATES.md (key issues, lint findings, proposed PRs).
  • Added 06_SELECTED_5_PR_PLAN.md (prioritized PR plan and order).

^{Written for commit 9fc37c6. Summary will update on new commits. Review in cubic}

[cubic-dev-ai]

1 issue found across 5 files

Prompt for AI agents (unresolved issues)

Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately.


<file name="CONTRIBUTING.md">

<violation number="1" location="CONTRIBUTING.md:15">
P2: CONTRIBUTING.md prescribes npm commands that conflict with the project's pnpm configuration</violation>
</file>

<sub>Reply with feedback, questions, or to request a fix.

Fix all with cubic | Re-trigger cubic</sub>

[cubic-dev-ai]

P2: CONTRIBUTING.md prescribes npm commands that conflict with the project's pnpm configuration

Prompt for AI agents

Check if this issue is valid — if so, understand the root cause and fix it. At CONTRIBUTING.md, line 15:

<comment>CONTRIBUTING.md prescribes npm commands that conflict with the project's pnpm configuration</comment>

<file context>
@@ -1,133 +1,40 @@
-- pnpm package manager
+2. Install dependencies:
+   ```sh
+   npm install
+   ```
 
</file context>

Suggested change

	npm install
	pnpm install