test(acp): preserve resident recovery on final core

[sethkarten]

Warning

BLOCKED ON CORE — topology-only reconstruction targeting main. The five-path P1 delta is tests/docs/package-command only and depends on resident launch-environment production surfaces not yet present on main. Expected test dependency failures are intentional evidence; do not merge until the required Core implementation lands.

Topology

Base PR targeting main, as required.

• first parent / prior reviewed head: c3ab0a13ff164598ac42c3cca2bc426cc5cccd68
• second parent / pinned main: 47dccfad4c0e71cd357f12d233ac44cc803af8c5
• current head: 6fecbb81737f0473718e66c4265630812d90df05

Exact incremental scope versus main

Only five paths:

• packages/coding-agent/CHANGELOG.md
• packages/coding-agent/package.json
• packages/coding-agent/test/acp-resident-lifecycle.test.ts
• packages/coding-agent/test/daemon-protocol.test.ts
• packages/coding-agent/test/daemon-supervisor-process.test.ts

No production src/** path is included. Required Core APIs/semantics remain an explicit dependency.

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