fix(native-profiler): fall back to host all-processes Time Profiler when the simulator Instruments tap is broken

[filip131311]

Problem

On Xcode 26.x / Instruments 16, xctrace can no longer package a --device <udid> --attach <app> simulator trace — coreprofilesessiontap fails during packaging. This breaks native profiling on the simulator entirely: native-profiler-start either errors out or produces an unusable trace.

Fix

When the device-attach recording fails on a simulator, transparently fall back to a host --all-processes Time Profiler recording and scope the results to the app's host PID.

Because Leaks/Allocations cannot target "All Processes", this fallback path is CPU-only by construction — hangs/leaks are intentionally not captured, and their absence is no longer surfaced as an export failure. Physical devices keep the original behavior (their processes aren't host processes, so there's nothing to fall back to — the original error is surfaced).

What changed

• native-profiler-start — resolve the app's host PID, retry device-attach (bounded, for cold-start races), then fall back to a host-wide Time Profiler scoped to that PID. Clears stale .trace bundles between attempts. Returns mode + processFilterPid.
• pipeline — filterSamplesByPid scopes a host-wide trace down to the app using the (AppName, pid: N) thread-fmt tag (anchored on the closing paren so 111 never matches 1110).
• native-profiler-analyze — emits an "Analysis Inconclusive" report (never "All clear") when the only data source produced no readable / app-matching samples, so an empty fallback trace isn't mistaken for a clean run. Suppresses hangs/leaks "export failed" noise in fallback mode.
• metadata sidecar (metadata.ts) — persists mode / processFilterPid / appProcess next to the trace, so a different tool-server process can reconstruct app-scoped analysis on profiler-load load_native.
• export — ExportOptions.keys restricts export to CPU in fallback mode.
• native-profiler-stop — writes the sidecar and threads mode/pid through the result.

Tests

• host-fallback.test.ts — PID scoping (drops unrelated host processes) + inconclusive reporting when CPU is empty/unreadable.
• stop-recovery.test.ts — updated for the new exportIosTraceData signature.

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