refactor: prune platform split residue

[thymikee]

Summary

Prune the dead policy, export, and routing residue left after the platform-package split. This is stacked on #2119.

• remove the unconsumed Apple interactions and runner/client package subpaths plus redundant Android IME and provision boot-diagnostics re-exports
• remove unreachable src/platforms workflow filters and duplicate daemon-modularity rules while preserving the retired-zone and R65 resurrection guards
• remove the orphaned Fallow suppression, repair moved baselines/docs, and lock six smaller eager import closures

Validation

• planted-red package-boundary and routing cases failed against the pre-cleanup tree, then passed after the removals
• node --experimental-strip-types --test scripts/gate/routing.test.ts scripts/layering/package-boundaries.test.ts scripts/layering/platform-package-policy.test.ts scripts/layering/daemon-modularity.test.ts (63 passed)
• focused Vitest suites (461 passed)
• production-unused exports: 28 -> 26, with no unused files or unresolved imports
• pnpm check:affected --run passed formatting, lint, typecheck, layering, Fallow, build, package, and integration checks; the related suite passed 2,985/2,986 tests, with one unrelated timer-based gesture-policy test timing out only under four-worker load and passing 4/4 in isolation

[github-actions]

Size Report

Metric	Base	Current	Diff
JS raw	2.51 MB	2.51 MB	0 B
JS gzip	839.3 kB	839.4 kB	+98 B
npm tarball	966.7 kB	966.8 kB	+98 B
npm unpacked	3.35 MB	3.35 MB	0 B

npm unpacked components

Component	Base	Current	Diff
JS / dist source	2.66 MB	2.66 MB	0 B
Apple runner source/project	581.1 kB	581.1 kB	0 B
macOS helper source	54.8 kB	54.8 kB	0 B
Android helper artifacts	0 B	0 B	0 B
Other package files	45.6 kB	45.6 kB	0 B

Startup median (7 runs, lower is better):

Scenario	Base	Current	Diff
CLI --version	31.0 ms	34.0 ms	+3.0 ms
CLI --help	82.6 ms	85.7 ms	+3.2 ms

Top changed chunks:

Chunk	Raw diff	Gzip diff
dist/src/mechanics.js	0 B	+88 B
dist/src/session2.js	0 B	+10 B

Top changed packed files

No changed packed files.

[thymikee]

Independent review found no code-level blocker on exact head 8d94bf5219f0b96dd060f0eaf398dacdd3185732. The removed Apple export-map entries have no remaining repository consumer; the live path keeps interactor and runner-client construction package-internal, consistent with ADR 0019/R13. The routing and export-map tests provide real planted-red protection, and exact-head CI is green.

One stack blocker remains: this PR is based on open #2119, whose exact head still has a failed iOS smoke. #2123's own iOS run passed, but clear or rerun #2119 before treating this stack layer as merge-ready.

[thymikee]

Dependency update: #2119’s failed iOS job was rerun against its exact head and is now green, including the previously failing fixture-backed simulator E2E step. The stack-level CI blocker called out here is cleared.

[thymikee]

Re-verified exact head 8d94bf5219f0b96dd060f0eaf398dacdd3185732: #2123's checks remain green and it is mergeable. Its direct prerequisite #2119 is also mergeable, with the previously failed iOS smoke rerun green on its unchanged exact head. The stack-level CI blocker is cleared; this layer is ready for human review in stack order after #2119.