Node v24 forbids --experimental-strip-types for files under node_modules/.
When GSD is globally installed, all src/ files live under node_modules/gsd-pi/,
causing every subprocess worker to crash with ERR_UNSUPPORTED_NODE_MODULES_TYPE_STRIPPING.
Bug 1: Extract resolveTypeStrippingFlag() into src/web/ts-subprocess-flags.ts.
When the package root is under node_modules/ and Node >= 22.7, the function
returns --experimental-transform-types (which handles node_modules paths).
All 15 service files and cli-entry.ts now call this function instead of
hardcoding --experimental-strip-types.
Bug 2: waitForBootReady() now tracks consecutive 5xx responses and aborts
after 3 in a row, including the response body in the error message.
Connection-level errors (transient during cold start) reset the counter.
Bug 3: The /api/boot route handler now wraps collectBootPayload() in
try/catch and returns { error: message } with status 500, matching the
error response pattern used by other API routes.
Fixes#1849
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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