fix: resolve Gemini CLI relaunch failure by invoking entry JS directly with node flags

Dockerfile

@@ -69,15 +69,39 @@ RUN for cmd in claude codex; do \
         fi; \
     done
 
-# Gemini wrapper: also hard-code headless env vars so they survive even when
-# Paperclip spawns gemini with a custom env object (no env inheritance fallback).
-# GEMINI_SANDBOX=false  — skip Docker sandbox attempt in containers
-# GEMINI_CLI_TRUST_WORKSPACE=true — skip interactive trust prompt (causes relaunch)
-RUN if [ -e /usr/local/bin/gemini ]; then \
-        mv /usr/local/bin/gemini /usr/local/bin/gemini-real && \
-        printf '#!/bin/sh\nunset NODE_OPTIONS\nexport NODE_OPTIONS="--max-old-space-size=4096 --no-deprecation --no-warnings"\nexport GEMINI_SANDBOX=false\nexport GEMINI_CLI_TRUST_WORKSPACE=true\nexec /usr/local/bin/gemini-real "$@"\n' > /usr/local/bin/gemini && \
-        chmod +x /usr/local/bin/gemini; \
-    fi
+# Gemini wrapper — definitive fix for "Failed to relaunch the CLI process":
+#
+# ROOT CAUSE: Gemini CLI checks process.execArgv for --max-old-space-size.
+#   NODE_OPTIONS does NOT populate process.execArgv, so Gemini always tries to
+#   relaunch itself with the flag as a CLI arg. That spawn fails in HF Spaces.
+#
+# FIX: Resolve the actual JS entry point at build time and invoke it directly
+#   via `node --max-old-space-size=4096 <entry.js>` so the flag IS in execArgv.
+#   Gemini sees it, skips the relaunch entirely.
+#
+# Also bake in headless env vars so they survive even when Paperclip spawns
+# gemini with a custom env object (no env inheritance fallback):
+#   GEMINI_SANDBOX=false          — skip Docker-sandbox attempt in containers
+#   GEMINI_CLI_TRUST_WORKSPACE=true — skip interactive workspace-trust prompt
+RUN GEMINI_PKG="/usr/local/lib/node_modules/@google/gemini-cli" && \
+    GEMINI_JS=$(node -e " \
+      const pkg = require('$GEMINI_PKG/package.json'); \
+      const bin = pkg.bin; \
+      const entry = typeof bin === 'string' ? bin : (bin.gemini || bin[Object.keys(bin)[0]]); \
+      console.log(require('path').resolve('$GEMINI_PKG', entry)); \
+    ") && \
+    echo "Gemini JS entry: $GEMINI_JS" && \
+    mv /usr/local/bin/gemini /usr/local/bin/gemini-real && \
+    { \
+      echo '#!/bin/sh'; \
+      echo 'unset NODE_OPTIONS'; \
+      echo 'export NODE_OPTIONS="--no-deprecation --no-warnings"'; \
+      echo 'export GEMINI_SANDBOX=false'; \
+      echo 'export GEMINI_CLI_TRUST_WORKSPACE=true'; \
+      echo "exec node --max-old-space-size=4096 $GEMINI_JS \"\$@\""; \
+    } > /usr/local/bin/gemini && \
+    chmod +x /usr/local/bin/gemini && \
+    echo "=== gemini wrapper ===" && cat /usr/local/bin/gemini
 
 # Install Python dependencies for sync
 RUN pip install --no-cache-dir --break-system-packages huggingface_hub PyYAML