refactor(contracts): keep RPC implementation exports private

[juliusmarminge]

Individual WebSocket RPC definitions are consumed through the assembled RPC group, not as separate package exports.

Keep those RPC implementation values and the runtime tool-lifecycle constant private. Preserve all Effect schemas, schema aliases, and exported types. This PR no longer rewrites schema aliases or their consumers.

Verification: contracts and consumer typechecks pass, existing contracts tests pass, and the integrated Knip gate passes. No existing tests were changed or removed.

Follows #10167.

Note

Keep RPC implementation exports private in contracts

Converts all exported RPC definition constants in rpc.ts and the TOOL_LIFECYCLE_ITEM_TYPES constant in providerRuntime.ts to module-private. Schema fields and behavior are unchanged; several Rpc.make calls were reformatted to a compact layout.

• Risk: external consumers importing these constants by name will fail to compile. In-tree references must rely on the public RPC contract surface rather than the implementation constants.

^{Macroscope summarized e36f20d.}

Model: gpt-6 astra. Harness: Codex in T3 Code.

[github-actions]

Thread transfer impact

✅ Thread transfer remains within every enforced ceiling.

ℹ️ No successful main baseline artifact is available yet. This run establishes the initial measurement.

Provider	Metric	Main baseline	This PR	Impact	PR ceiling
Codex	Total thread wire	—	13.5 KiB	—	15.1 KiB	✅
Codex	Thread snapshot wire	—	7.0 KiB	—	7.3 KiB	✅
Codex	Live turn WebSocket wire	—	6.5 KiB	—	7.8 KiB	✅
Codex	Live turn WebSocket decoded	—	57.0 KiB	—	66.4 KiB	✅
Codex	Live turn messages	—	8	—	21	✅
Claude	Total thread wire	—	13.5 KiB	—	15.1 KiB	✅
Claude	Thread snapshot wire	—	7.0 KiB	—	7.3 KiB	✅
Claude	Live turn WebSocket wire	—	6.5 KiB	—	7.8 KiB	✅
Claude	Live turn WebSocket decoded	—	57.8 KiB	—	66.4 KiB	✅
Claude	Live turn messages	—	9	—	21	✅

Baseline: unavailable · PR result: e36f20d · Source CI: success

Scenario and decoded snapshot size

10 historical turns, 5 command tools per turn, 878.9 KiB retained MCP result per historical turn, and a 1.05 MiB retained result in the measured turn.

• Codex decoded thread snapshot: 113.8 KiB
• Claude decoded thread snapshot: 114.5 KiB

Updated in place by a trusted workflow. PR artifacts are strictly validated and never executed.

[macroscopeapp]

Approvability

A prior Macroscope approval was dismissed. Re-evaluating 38c1d41…

No code changes detected at e36f20d. Prior analysis still applies.

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Dismissing prior approval to re-evaluate 38c1d41

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