fix: discovery improvements, dead-code removal, tests, and docs alignment

.github/workflows/ci.yml

@@ -8,7 +8,7 @@ on:
 
 jobs:
   typecheck:
-    name: Typecheck (Node ${{ matrix.node }})
+    name: Typecheck & Test (Node ${{ matrix.node }})
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false
@@ -28,3 +28,6 @@ jobs:
 
       - name: Typecheck
         run: npm run typecheck
+
+      - name: Test
+        run: npm test

CONTRIBUTING.md

@@ -18,6 +18,7 @@ git clone https://github.com/yuseferi/opencode-litellm.git
 cd opencode-litellm
 npm install
 npm run typecheck
+npm test
 ```
 
 ## Testing locally against your OpenCode
@@ -32,11 +33,12 @@ npm link opencode-plugin-litellm
 opencode
 ```
 
-Plugin logs are prefixed with `[opencode-litellm]` — `tail -f ~/.opencode/logs/...` to watch them.
+Plugin logs are prefixed with `[opencode-litellm]` — find them under `~/.local/share/opencode/log/`.
 
 ## Pull request checklist
 
 - [ ] `npm run typecheck` passes locally
+- [ ] `npm test` passes locally; behavior changes come with test updates
 - [ ] No new runtime dependencies (or strong justification in the PR description)
 - [ ] Public API changes are reflected in the README
 - [ ] User-visible changes are added to `CHANGELOG.md` under `## [Unreleased]`