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

Dockerfile

@@ -1,10 +1,11 @@
 # Web-based PowerShell + SST OpenCode terminal
-# Uses pre-built OpenCode CLI from GitHub releases
+# Builds OpenCode CLI from source during Docker build
 FROM ubuntu:24.04
 
 ARG PWSH_VERSION=7.4.6
 ARG NODE_VERSION=20.18.1
 ARG TTYD_VERSION=1.7.7
+ARG BUN_VERSION=1.3.8
 
 ENV DEBIAN_FRONTEND=noninteractive \
     TERM=xterm-256color \
@@ -23,6 +24,7 @@ RUN apt-get update \
         tini \
         libicu-dev \
         libssl-dev \
+        unzip \
     && rm -rf /var/lib/apt/lists/*
 
 # Install Node.js
@@ -33,6 +35,10 @@ RUN curl -fsSL -o /tmp/node.tar.xz \
     && ln -sf /usr/local/bin/npm /usr/bin/npm \
     && rm -f /tmp/node.tar.xz
 
+# Install Bun
+RUN npm install -g bun@${BUN_VERSION} \
+    && bun --version
+
 # Install PowerShell
 RUN curl -fsSL -o /tmp/powershell.tar.gz \
     "https://github.com/PowerShell/PowerShell/releases/download/v${PWSH_VERSION}/powershell-${PWSH_VERSION}-linux-x64.tar.gz" \
@@ -47,10 +53,20 @@ RUN curl -fsSL -o /usr/local/bin/ttyd \
     "https://github.com/tsl0922/ttyd/releases/download/${TTYD_VERSION}/ttyd.x86_64" \
     && chmod +x /usr/local/bin/ttyd
 
-# Download OpenCode CLI from GitHub releases
-# This will download the latest release - requires the release to exist first
-RUN curl -fsSL -L -o /usr/local/bin/opencode \
-    "https://github.com/southseact-3d/shopify-ai-backup/releases/latest/download/opencode-linux-x64" \
+# Build OpenCode CLI from source
+COPY opencode /opt/opencode-src
+WORKDIR /opt/opencode-src
+
+# Configure git for any workspace dependencies that use git URLs
+RUN git config --global url."https://github.com/".insteadOf "ssh://git@github.com/"
+
+# Install dependencies and build OpenCode CLI
+ENV HUSKY=0
+RUN bun install 2>&1 \
+    && bun run ./packages/opencode/script/build.ts --single
+
+# Copy the built binary to /usr/local/bin
+RUN cp /opt/opencode-src/packages/opencode/dist/opencode-linux-x64/bin/opencode /usr/local/bin/opencode \
     && chmod +x /usr/local/bin/opencode \
     && opencode --version