chore(release): v0.1.0-beta.0 prep — AGPL relicense + opclib-pack v0.2.0 signing

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,30 @@
+---
+name: Bug report
+about: Report a bug in any @openpcb/* package
+labels: bug
+---
+
+**Package**
+
+[ kicad-parsers / rendering-core / kicad-import / step-to-glb / r3f-eda-canvas / opclib-pack / command-pattern / contracts ]
+
+**Version (tag)**
+
+`<package>-v<X.Y.Z>`
+
+**What happened**
+
+**Reproduction**
+
+Minimal code or input file:
+
+```ts
+// repro
+```
+
+**Expected behavior**
+
+**Environment**
+
+- Node / Bun version:
+- Consumer (OpenPCB, custom, …):

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,22 @@
+---
+name: Feature request
+about: Suggest an addition to a shared package
+labels: enhancement
+---
+
+**Package**
+
+Which `@openpcb/*` package this affects.
+
+**Problem**
+
+**Proposed API change**
+
+```ts
+// pseudocode
+```
+
+**Compat**
+
+- Is this a breaking change? Yes / No
+- Affects which downstream consumers?

.github/pull_request_template.md

@@ -0,0 +1,27 @@
+## Summary
+
+<!-- What's changed in which package(s). -->
+
+## Affected packages
+
+- [ ] kicad-parsers
+- [ ] rendering-core
+- [ ] kicad-import
+- [ ] step-to-glb
+- [ ] r3f-eda-canvas
+- [ ] opclib-pack
+- [ ] command-pattern
+- [ ] contracts
+
+## Checklist
+
+- [ ] `npm run typecheck`
+- [ ] `npm run test`
+- [ ] `npm run build` (all dist/ rebuild cleanly)
+- [ ] Bumped affected package(s) version in their `package.json` (if shipping)
+- [ ] Updated OpenPCB consumer pin (if breaking)
+
+## Breaking change?
+
+- [ ] No
+- [ ] Yes (describe migration path below)

CODE_OF_CONDUCT.md

@@ -0,0 +1,5 @@
+# Code of Conduct
+
+The OpenPCB shared/ community follows the [Contributor Covenant 2.1](https://www.contributor-covenant.org/version/2/1/code_of_conduct.html).
+
+Report violations to **conduct@openpcb.app**.

CONTRIBUTING.md

@@ -0,0 +1,69 @@
+# Contributing to OpenPCB shared/
+
+`shared/` hosts the `@openpcb/*` npm packages consumed by OpenPCB (and any other downstream): KiCad parsers, rendering primitives, `.opclib` pack/unpack, STEP→GLB, command pattern, contracts.
+
+## Quick start
+
+```bash
+git clone https://github.com/OpenPCB-app/shared.git
+cd shared
+npm install
+npm run build       # build every package's dist/
+npm run test        # bun test across packages
+npm run typecheck
+```
+
+Requirements: Node 22+, Bun ≥1.3 (for tests), npm 10+.
+
+## Layout
+
+```
+shared/
+└── packages/
+    ├── kicad-parsers/
+    ├── rendering-core/
+    ├── kicad-import/
+    ├── step-to-glb/
+    ├── r3f-eda-canvas/
+    ├── opclib-pack/
+    ├── command-pattern/
+    └── contracts/
+```
+
+Each package is independent: own `package.json`, own version, own GitHub tag. Cross-package deps inside `shared/` go through the workspace.
+
+## Local development against OpenPCB
+
+```bash
+cd ../OpenPCB
+npm run shared:link    # symlinks node_modules/@openpcb/* to ../shared/packages/*
+npm run shared:status  # show current link state
+npm run shared:unlink  # restore github-tag installs
+```
+
+`shared/packages/*` build on install (`prepare` scripts). If `dist/` is missing after `npm install`, run `npm run build` in `shared/`.
+
+## Before opening a PR
+
+```bash
+npm run typecheck
+npm run test
+npm run build      # verify all dist/ rebuild cleanly
+```
+
+## Release ritual
+
+Per-package semver tags drive subtree-split publishing:
+
+```
+git tag <package>-vX.Y.Z       # e.g. opclib-pack-v0.2.1
+git push origin <package>-vX.Y.Z
+```
+
+The release workflow subtree-splits the package into a temporary branch and retags it at the split commit. Downstream consumers install via `github:OpenPCB-app/shared#<package>-v<X.Y.Z>`.
+
+When bumping a package that OpenPCB depends on, also update the matching `package.json` entry in `OpenPCB/package.json`.
+
+## License
+
+All `@openpcb/*` packages are licensed under **AGPL-3.0-or-later**. By contributing, you agree your contributions are licensed under AGPL-3.0-or-later.