* feat(agent): add Pi agent runtime support
Add Pi as a new agent runtime provider, following the established adapter
pattern. Pi CLI outputs JSONL events which are parsed for messages, tool
calls, and usage tracking.
Backend:
- New piBackend implementing the Backend interface (pi.go)
- Pi CLI discovery via MULTICA_PI_PATH env var or PATH lookup
- JSONL event stream parsing (agent_start, message_update, thinking_update,
tool_execution_start/end, agent_end)
- Usage scanner for ~/.pi/sessions/*.jsonl files
- Runtime config injection via AGENTS.md
- Skill injection to .pi/agent/skills/
Frontend:
- Pi provider logo (teal π icon)
- Pi label in transcript dialog
Docs:
- Updated all provider lists in README, CLI_INSTALL, and docs
* fix(agent): filter Pi usage scanner to agent_end events only
Address review feedback: restrict usage parsing to agent_end events
which contain cumulative totals, preventing potential inaccuracy if
Pi adds usage fields to other event types in the future.
* fix(agent): align Pi runtime with real CLI flags, event schema, and custom_args
- Flags: Pi's CLI uses `--mode json` (not `--output-format jsonl`), has no
`--yolo` (explicit `--tools` allowlist instead), takes the prompt as a
positional argument (not `-p <prompt>`), splits model as
`--provider <name> --model <id>`, and treats `--session` as a file path
that must exist before spawn.
- Event parsing: rewrite the stream event struct to match Pi's actual
JSON event schema (`message_update.assistantMessageEvent.delta`,
`turn_end.message.usage.{input,output,cacheRead,cacheWrite}`, etc.).
- Sessions: generate/persist session files under ~/.multica/pi-sessions/
and use the file path as the opaque SessionID returned to the daemon.
- Usage scanner: read assistant `message` events from the same session
files (Pi's session-file schema, distinct from the stdout stream).
- Custom args: consume `ExecOptions.CustomArgs` via `filterCustomArgs`
with a Pi-specific blocked set (`-p`, `--print`, `--mode`, `--session`)
so Pi matches the pattern shared by every other agent backend.
Previously only Claude and Codex had log-scanning-level token usage
reporting (Flow B). This adds scanners for the remaining three runtimes:
- OpenCode: reads JSON message files from ~/.local/share/opencode/storage/message/
- OpenClaw: reads JSONL session files from ~/.openclaw/agents/*/sessions/
- Hermes: reads JSONL session files from ~/.hermes/sessions/
All three are registered in Scanner.Scan() and follow the same
(date, provider, model) aggregation pattern as existing scanners.
The parser read `payload.msg` but Codex JSONL files store token data at
`payload.info`. Also adds model tracking from `turn_context` events,
`last_token_usage` fallback, and `cache_read_input_tokens` field support.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add a new "Runtimes" sidebar tab to manage local agent runtimes with three
main capabilities: runtime status overview, token usage tracking (reading
Claude Code and Codex CLI local JSONL logs via daemon), and an interactive
connection test that sends a ping through the daemon to verify end-to-end
agent CLI connectivity.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
