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f81fcccd93
Delete kill(signal?) from SubprocessHandle: consumers stop a process only through terminate()'s tree-scoped SIGTERM→graceMs→SIGKILL escalation (idempotent, also driven by the spec's abort signal, a no-op once the tree is gone). The single-signal verb had exactly one consumer family — lsp-local — and what it bought there was a private re-implementation of the same escalation. The internal kill closure stays in spawn.ts as the dispose ladder's tier primitive; terminate() now routes through it too. lsp-local collapses onto the seam's escalation: - LspConnection replaces its terminate()/kill() pair with one terminate() that delegates to handle.terminate(). Behavior change: the framing-failure path terminates instead of instant SIGKILL, so a misbehaving server now gets SIGTERM plus the killGraceMs window to flush before SIGKILL. - ConnectionSpec.pipeDrainGraceMs becomes killGraceMs: one grace, the spawn spec's graceMs, drives both the escalation window and post-exit pipe draining (the provider already passed killGraceMs for it). - LspInstance.forceTerminate() drops its hand-rolled bounded first wait (LSP_KILL_GRACE) and escalateProcessTree (deleted with its export and unit test): the seam's escalation already commits to SIGKILL after killGraceMs, so only the unbounded quiescence awaits stay load-bearing. Tests: kill()-shaped spawn specs become terminate()-shaped or fold into the terminate() suites (group-wide delivery; the settled no-op case was already pinned by 'terminate() after the tree died'); tree-survivor coverage is intact. A stderr-'inherit' disposition test completes the stdout/stderr symmetry so the scoped subprocess+lsp coverage gate stands alone instead of leaning on subagent-acp's cross-package runs. Docs: SubprocessHandle type-equiv block, seam/impl/group READMEs, and the consumer-migration Agent Note lose the kill(signal?) vocabulary (zh pairs re-recorded); cordis api/services catalogs regenerated.