The operator's capabilities contract was Claude-only — delivered via the
hh-operator skill, which non-Claude runners cannot load. Extract it into a
portable CAPABILITIES.md and make compose_directive runner-aware: the claude
runner still loads its skill, every other runner gets the capabilities prompt
inlined. Same contract, no skill machinery required.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Generalize the three Claude-hardcoded spots in bootstrap (launch argv,
install plan, creds/config-dir) behind a Runner registry so a nested
operator can be spawned with any agent CLI. The Claude path stays the
default and byte-identical.
- bootstrap.Runner + RUNNERS{claude,codex,gemini,cmd} + get_runner/runner_present
- build_run_argv / install_plan / creds_source / plan_creds / child_env all
take an optional `runner` (default claude → unchanged behaviour)
- claude validated end-to-end; codex/gemini are best-effort defaults
overridable via $HH_<RUNNER>_INSTALL etc.; generic `cmd` runner reads a
full launch template from $HH_OPERATOR_CMD ({directive} placeholder)
- bridge _op_spawn resolves req["runner"], rejects unknown; plan now carries
runner/runner_present (was claude_present)
- CLI: `spawn --runner {claude|codex|gemini|cmd}`
- 7 new unit tests; full suite 132 passed
Note: compose_directive still emits the Claude-flavoured ("hh-operator
skill") directive — the portable Layer-1 prompt is P4.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Lets an operator stand up a nested Claude Code operator against another room —
a tree of operators — behind hard guardrails:
- Budget(depth, fanout, cost): depth/fanout are hard caps decremented on every
descend(); a leaf (depth 0) or a spent level (fanout 0) refuses to spawn,
stopping a runaway tree. Cost is carried down as a soft ceiling.
- detect_system / install_plan: decide install from what's present; prefer the
documented npm package `@anthropic-ai/claude-code` or a $HH_CLAUDE_INSTALL
override — never a guessed URL.
- Credentials are gated OFF by default: a child authenticates itself unless the
operator explicitly passes allow_creds, and only its own creds, only to a path
it was handed.
- compose_directive bakes the objective, stop conditions and inherited budget
into the child's `claude -p` prompt so it self-limits.
`spawn` op + CLI verb default to a dry-run plan (inspect the tree before growing
it); `--go` launches detached on the host. `up`/`serve` take --depth/--fanout/
--cost. 24 offline tests green; dry-run plan verified live through the socket.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>