Build OpenCode from source in Docker and remove broken session token queries

- Dockerfile: Build OpenCode CLI from source during Docker build instead of downloading from GitHub releases
- Disabled GitHub Actions workflow that was failing to create releases
- Removed getOpencodeSessionTokenUsage function that tried non-existent CLI commands (session info/usage/show)
- Token tracking now relies on 3 layers: result extraction, streaming capture, and estimation

.github/workflows/build-opencode-cli-docker.yml.disabled

@@ -0,0 +1,90 @@
+name: Build OpenCode CLI
+
+on:
+  push:
+    branches:
+      - main
+      - master
+    paths:
+      - 'opencode/**'
+      - '.github/workflows/build-opencode-cli-docker.yml'
+  workflow_dispatch:
+
+permissions:
+  contents: write
+  actions: read
+
+jobs:
+  build-cli:
+    name: Build OpenCode CLI (x86_64)
+    runs-on: ubuntu-24.04
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Bun
+        uses: oven-sh/setup-bun@v2
+        with:
+          bun-version-file: opencode/package.json
+
+      - name: Install dependencies
+        run: bun install
+        working-directory: opencode
+        env:
+          HUSKY: 0
+
+      - name: Build CLI
+        run: bun run ./packages/opencode/script/build.ts --single
+        working-directory: opencode
+
+      - name: Upload CLI artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: opencode-cli-x86_64
+          path: opencode/packages/opencode/dist/opencode-linux-x64
+          retention-days: 1
+
+      - name: Create Release
+        id: create_release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: opencode-cli-${{ github.sha }}
+          release_name: OpenCode CLI ${{ github.sha }}
+          draft: false
+          prerelease: false
+
+      - name: Upload Release Asset
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: opencode/packages/opencode/dist/opencode-linux-x64/bin/opencode
+          asset_name: opencode-linux-x64
+          asset_content_type: application/octet-stream
+
+      - name: Cleanup old CLI artifacts
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const artifactName = 'opencode-cli-x86_64';
+            const { data: artifacts } = await github.rest.actions.listArtifactsForRepo({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              name: artifactName,
+              per_page: 10
+            });
+            
+            if (artifacts.length > 1) {
+              const artifactsToDelete = artifacts.slice(1);
+              for (const artifact of artifactsToDelete) {
+                await github.rest.actions.deleteArtifact({
+                  owner: context.repo.owner,
+                  repo: context.repo.repo,
+                  artifact_id: artifact.id
+                });
+                console.log(`Deleted old artifact: ${artifact.id}`);
+              }
+            }