The runtime half. Group route TEMPLATES now expand into every descendant
app's in-memory match slice, live, with no per-app materialization.
- `compile_effective_routes` consumes the `list_effective` expansion and
applies NEAREST-OWNER-WINS shadowing: for one app, identical binding
tuples (method+host+path) owned at multiple chain levels collapse to the
nearest (an app's own route shadows an ancestor-group template); a nearer
group beats a farther one. Non-identical bindings coexist and the
existing matcher precedence resolves each request. `compile_route` now
takes the effective app_id, so the matcher + dispatch are unchanged.
- `rebuild_route_table` is the single refresh chokepoint (list_effective →
compile_effective_routes → replace_all). Route CRUD, the apply reconcile,
and startup all route through it; the apply guards drop the "a group node
touches no routes" assumption (a group apply may now create templates).
- FULL-LIVE INVALIDATION: app create/delete (apps_api) and group reparent
(groups_api) rebuild the snapshot, so inherited routes take effect the
instant the tree changes — matching the live model of triggers/vars.
Best-effort, mirroring apply: a failed rebuild self-heals on the next
write or restart, never failing the committed mutation.
The isolation boundary is the chain expansion: a template lands only in the
slices of apps whose ancestor chain contains the owning group. Pinned by a
deterministic live-DB integration test (descendant inherits, sibling
subtree does not, app shadows by identical binding, non-identical coexists).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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