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Wave 2 of transparent SSH support (4 parallel owner-agents on disjoint
tool packages). The tools now resolve an ExecBackend per-call from
ctx.computerId and call backend.spawn / backend.readFile / etc. instead of
node:fs and node:child_process directly — so they are transport-agnostic
(local now; remote over SSH later, transparent to the agent). Still LOCAL-ONLY
this wave (computerId always undefined -> LocalExecBackend, behavior-identical).
- tool-shell: factory takes resolveBackend; execute calls backend.spawn.
spawn.ts DELETED (realSpawn was a verbatim duplicate of exec-backend's
LocalExecBackend.spawn — logic moved to the sanctioned shared package).
manifest dependsOn:[exec-backend]; host.getService at activation.
- tool-read-file: readFile/stat/readdir -> backend.* (pure logic untouched;
ENOENT .code branches kept).
- tool-write-file: exists/stat/writeFile -> backend.* (pure logic untouched).
- tool-edit-file: readFile/writeFile -> backend.* + forward-compatible REMOTE
diagnostics skip (ctx.computerId set -> skip LSP, return empty — plan §6.1;
local path byte-identical to today). LSP lookup stays lazy.
- orchestrator: pre-wired @dispatch/exec-backend dep into the 4 tool
package.jsons + bun install (build/config, my lane) so isolated verify
resolved cleanly; agents added the ../exec-backend tsconfig ref.
Verified: tsc -b EXIT 0, biome clean, 1599 vitest pass (was 1592).
Refs: notes/ssh-support-plan.md (decisions §0.5/§13). No merge or push.
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conversation
kernel: executeToolCall now races tool.execute against the abort signal
via Promise.race; on abort resolves (not rejects) with an "Aborted" result
so the step completes normally → finishReason "aborted" → turn seals
cleanly (done event) → finally clears activeTurns → conversation freed,
next message accepted. run-turn strips tool-call chunks from the assistant
message on abort (keeps text/thinking) and omits tool-result messages to
avoid persisting dangling tool calls that would 400 the provider next turn.
tool-shell: realSpawn spawns detached (own process group); on abort AND
timeout kills the entire group (process.kill(-pgid, SIGKILL)) and resolves
immediately — no child.on("close") dependency, so a grandchild holding the
pipes can't stall the spawn promise or leak.
Also: ORCHESTRATOR.md migrated to dispatch CLI summon mechanism; .skills
summary; bin/sync-env PATH injection; frontend handoff docs.
1453 vitest pass · tsc -b EXIT 0 · biome clean.
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Four standard-tier tool extensions (one tool per extension, zero ABI change):
- tool-read-file: read_file now lists directory contents (sorted, /-suffixed subdirs)
- tool-shell: run_shell (foreground, streamed, cancellable, cwd, timeout + output cap)
- tool-edit-file: edit_file (oldString/newString/replaceAll; errors on absent/non-unique)
- tool-write-file: write_file (explicit overwrite flag)
Registered in host-bin CORE_EXTENSIONS. Live boot clean (shell capability accepted).
686 vitest + 89 bun = 775 tests; tsc -b EXIT 0; biome clean.
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