feat: opencode/tinfoil backend support in all launchers
Adds LOOP_BACKEND=opencode|claude (+ LOOP_MODEL) to launch.sh and
launch-upgrader.sh, enabling the loops/upgrader to run via opencode CLI
against the tinfoil.sh API (deepseek-v4-pro etc.) instead of Claude.
launch.sh:
- LOOP_BACKEND (claude|opencode), LOOP_MODEL env vars
- OPENCODE_BIN, OPENCODE_HOST (tailscale IP), OPENCODE_PORT (per-session)
- start_agent: backend switch — claude path unchanged; opencode starts
`opencode --hostname <ts-ip> --port <N> run <kickoff>` so the web UI
is bound to the tailscale interface (tailnet-only observability)
- preflight: validates the right binary per backend
- heal_session / heal_orchestrator: extend active-work detection to
opencode spinner chars + "Running tool"
- help: shows both backend configs
launch-upgrader.sh:
- UPGRADER_BACKEND / UPGRADER_MODEL (LOOP_BACKEND/LOOP_MODEL override)
- start: same backend switch as launch.sh
- OPENCODE_PORT=4098 (separate from loops 4096/4097)
configuration.nix: note opencode binary location + re-install command.
Tinfoil config: ~/.config/opencode/opencode.jsonc — provider "tinfoil"
with baseURL=https://api.tinfoil.sh/v1, apiKey=env:TINFOIL_API_KEY
(key + TINFOIL_MODEL + TINFOIL_BASE_URL stored in .testenv).
opencode v1.15.13 installed at /home/loops/.local/bin/opencode.
Usage:
LOOP_BACKEND=opencode LOOP_MODEL=tinfoil/deepseek-v4-pro \
RESUME_PHASE=1 cc-ci-plan/launch.sh start
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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