fix(gemini): system-wide env vars via /etc/environment + /etc/profile.d/

Install and update scripts now:
- Write GEMINI_API_KEY + GOOGLE_GEMINI_BASE_URL to /etc/environment (all users)
- Create /etc/profile.d/gemini-cli.sh for login shell export (all users)
- Export for current session
- Update script now also sets env vars (was missing entirely)
- Removed per-user ~/.bashrc approach — system-wide is more reliable

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

gemini/ugemini_install.sh

@@ -190,39 +190,35 @@ else
     log "Settings already configured"
 fi
 
-# ---- Set environment variables ----
+# ---- Set environment variables (system-wide, all users) ----
 
 info "Setting environment variables..."
-ENV_VARS='export GEMINI_API_KEY="ClauderAPI"
-export GOOGLE_GEMINI_BASE_URL="https://ai.37-187-136-86.sslip.io"'
+API_KEY="ClauderAPI"
+BASE_URL="https://ai.37-187-136-86.sslip.io"
 
-for rc_file in "$HOME/.bashrc" "$HOME/.zshrc"; do
-    if [ -f "$rc_file" ]; then
-        if ! grep -q 'GEMINI_API_KEY' "$rc_file" 2>/dev/null; then
-            echo "" >> "$rc_file"
-            echo "# Gemini CLI (UnlimitedCoding)" >> "$rc_file"
-            echo "$ENV_VARS" >> "$rc_file"
-            log "Added env vars to $(basename "$rc_file")"
-        fi
+# Write to /etc/environment (all users, all sessions including cron)
+ETC_ENV="/etc/environment"
+for kv in "GEMINI_API_KEY=\"$API_KEY\"" "GOOGLE_GEMINI_BASE_URL=\"$BASE_URL\""; do
+    KEY="${kv%%=*}"
+    if grep -q "^${KEY}=" "$ETC_ENV" 2>/dev/null; then
+        sed -i "s|^${KEY}=.*|${kv}|" "$ETC_ENV"
+    else
+        echo "$kv" >> "$ETC_ENV"
     fi
 done
+log "Env vars written to $ETC_ENV (all users)"
+
+# Write to /etc/profile.d/ for export in login shells
+cat > /etc/profile.d/gemini-cli.sh << PROF_EOF
+export GEMINI_API_KEY="$API_KEY"
+export GOOGLE_GEMINI_BASE_URL="$BASE_URL"
+PROF_EOF
+chmod 644 /etc/profile.d/gemini-cli.sh
+log "Export script created: /etc/profile.d/gemini-cli.sh"
 
 # Export for current session
-export GEMINI_API_KEY="ClauderAPI"
-export GOOGLE_GEMINI_BASE_URL="https://ai.37-187-136-86.sslip.io"
-
-# ---- Also set for other users ----
-
-if [ "$(id -u)" -eq 0 ]; then
-    PROFILE_D="/etc/profile.d/gemini-cli.sh"
-    cat > "$PROFILE_D" << 'PROF_EOF'
-# Gemini CLI (UnlimitedCoding)
-export GEMINI_API_KEY="ClauderAPI"
-export GOOGLE_GEMINI_BASE_URL="https://ai.37-187-136-86.sslip.io"
-PROF_EOF
-    chmod 644 "$PROFILE_D"
-    log "Set env vars for all users: $PROFILE_D"
-fi
+export GEMINI_API_KEY="$API_KEY"
+export GOOGLE_GEMINI_BASE_URL="$BASE_URL"
 
 # ---- Verify ----