* fix(javascript): report path data records as route candidates
A string `path` or `route` property was reported as an exact, observed
route endpoint whatever object held it, so data records such as
`{ type: "set", path: "updatedAt" }` became routes while a real
`app.get("/x")` stayed a low-confidence candidate.
Keep the property finding, but mark it as a candidate unless its object
has router fields (`component`, `element`, `Component`, `children`, or a
typed `_$` record), using the same shape check that already selects
automatic route roots. Route candidates get a route-specific limitation.
Fixes#6349
* fix(javascript): scan each route record's keys once
`#property` read the enclosing object's keys for every `path` or `route`
property, so an object repeating those keys was scanned quadratically.
Cache the record shape per object and share it with `#object`.
Resolve stable lexical and URL targets using shared effects, and preserve unresolved request expressions as partial facts. Carry their uncertainty through workers, artifact graphs, and the CLI. Scope partial endpoint identity to the source site.
Refs: #3451, #3534
Co-authored-by: Hemang Varshney <218273197+hemv-857@users.noreply.github.com>