* feat(sessions): stamp agent identity on spawned sessions and return spawn receipts
Agent-spawned sessions recorded the requesting session key as createdActor.id,
so the Control UI creator chip rendered an opaque key. Spawn producers now stamp
the canonical requester agent id; parent-authority validation moves to a new
trusted requesterSessionKey field. projectSessionActor enriches agent actors
with configured identity name/avatar at read time, and visible sessions_spawn
returns a sessionUrl + owner receipt with URL-first acknowledgement guidance.
* feat(sessions): assignable session ownership with owner facet and menus
GitHub-assignee-style ownership: sessions get a mutable owner (defaulting to
the immutable createdActor) stored in additive bare-nullable SQLite columns
with first-use lazy ensure. New operator.write sessions.assignOwner validates
targets, requires an identified caller, authorizes by session visibility, and
records assignedBy/assignedAt inside the write transaction. The sessions agent
tool gains assign_owner; the Control UI adds Assign-to-me/Assign-to menus in
sidebar rows and chat headers, renders the effective owner chip, and the
creator facet/filter now keys on effective owner. Sharing authority stays
anchored on createdActor.
* feat(sessions): record session participants and stack them in the owner chip
Records every distinct external prompter (human profile/channel sender, or a
requesting agent) per session in an additive session_participants table at the
turn-admission boundary — best-effort, deferred, never blocking the turn; the
session's own agent and viewers are never recorded, capped at 32 per session.
The session row projects a bounded participants list (owner excluded) plus a
total count with the same actor enrichment as owner/createdActor. The sidebar
chip becomes a pair-stack when others have prompted (owner front, one peeking
participant or +N behind), the chat header shows the full facepile, and an
authenticated involvingMe list filter adds an Involving-me sidebar predicate.
Participant projection is excluded from logical-session CAS equality so display
history never invalidates session writes.
* fix(sessions): identify built-in agent tool callers for owner assignment
The sessions tool's assign_owner dispatched through the in-process synthetic
client, which carries neither a signed agent-runtime identity nor a human
profile, so agent-initiated reassignment always failed with FORBIDDEN. The
tool now captures its trusted requester agent identity and carries it across
in-process dispatch as internal client state (never wire params); the handler
derives assignedBy as signed runtime identity, then trusted agent-tool caller,
then authenticated human. Live-verified end-to-end on a dev gateway.
* fix(ci): split oversized session modules and refresh prompt snapshots
Split the max-lines offenders at concept boundaries for session equality, tool overrides, and protocol owner schemas. Remove the redundant Number conversion from the node:sqlite participant count. Refresh prompt snapshots after drift from the sessions and sessions_spawn tool description updates.
* fix(ci): restore solo-mode chip suppression and conform new method descriptors
Solo-mode root cause: owner-assignment submenu options reused the permanent owner-chip custom element, so hidden menu avatars were counted as attribution chrome. Menus now use viewer avatars while gateway-gated owner chips remain exclusive to collaborative sessions.
Conform sessions.assignOwner to the 2026.8 descriptor and append-only advertised-method inventories, and regenerate the Swift and Kotlin protocol surfaces.
Keep historical v15/v14 fixtures frozen by stripping the new owner columns; the existing range already excludes the participant table. Replace the new raw SQLite schema probes with synchronous Kysely queries.
Clear max-lines by splitting the organizer host contract, pure agent-navigation projections, and ownership/filtering sidebar cases at their concept boundaries.
* fix(ci): integrate ownership series with latest main surfaces
Wire the sessions-page assign-owner action, merge capability imports, narrow the navigation export scope, and apply sessions-create formatting.
The owner-presence regression came from hidden assign-owner menu avatars emitting data-viewer-id, so owner and menu chrome now opt out of presence markers while real facepiles retain them.
* fix(sessions): scope the involving-me filter to profile-backed participants
Session participant history mixed channel-native sender ids with authenticated Gateway profile ids, so involving-me missed real sessions and could accept numeric collisions.
Record the actor_source namespace at each producer, carry it through the internal SQLite projection, and match authenticated viewers only against profile-backed human participants. Legacy NULL sources fail closed for filtering, while channel ids remain available for display.
* build(ui): raise startup budget baseline for session ownership surfaces
Ownership chips, assignment menus, and the participant stack add ~0.7 KiB
gzip to the startup path; CI compression landed just over the previous
baseline+tolerance. Hard cap (350 KiB) unchanged.
* refactor(sessions): drop raw NULL projection for the lazy actor_source column
The Kysely guardrail rejects typed raw sql snippets outside allowlisted
boundaries; select the lazily-ensured column only when present and let the
row projection treat its absence as unknown/legacy.
* build(ui): refresh combined startup baseline
Stage test registries without retiring the worker's ambient registry, then restore its exact snapshot after each producer. This prevents later non-isolated gateway tests from inheriting plugin runtime state.
Resolve the deliberately non-cancelled handler after asserting its client deadline, then wait for root admission to drain before leaving the non-isolated test.
Peter Steinberger