refactor(session): rename the seed boundary to end-seed

packages/core/agent-loop/tests/loop.spec.ts

@@ -1224,6 +1224,6 @@ describe('agent loop', () => {
     // event-by-event identity of types over the inherited prefix
     expect(replayed.events.slice(0, agent.session.seq).map(e => e.type)).toEqual(
       agent.session.events.map(e => e.type))
-    expect(replayed.events.at(-1)?.type).toBe('session/inherited')
+    expect(replayed.events.at(-1)?.type).toBe('session/end-seed')
   })
 })

packages/core/agent-loop/tests/resume.spec.ts

@@ -283,7 +283,7 @@ describe('the session-persistence Agent Note: AgentLoop factory create/resume',
       agentOptions: { provider: 'mock', model: 'mock' },
       setup: async (agentCtx) => {
         expect(agentCtx.agent?.id).toBe(sessionId)
-        // The two persisted events plus the inherited-history boundary.
+        // The two persisted events plus the end-seed marker.
         expect(agentCtx.agent?.session.events).toHaveLength(3)
         agentCtx.on('session/created', () => void order.push('setup-listener:session/created'))
         agentCtx.on('agent/created', () => void order.push('setup-listener:agent/created'))
@@ -586,10 +586,10 @@ describe('the session-persistence Agent Note: AgentLoop factory create/resume',
     const a2 = (await ctx2.agents.resume({ resumeSessionId: SessionId('sess-resume') })).agent
     // The resumed session carries the prior history…
     expect(a2.session.id).toBe('sess-resume')
-    // …below one boundary marking all of it inherited.
+    // …followed by one end-seed event marking the constructor seed.
     expect(a2.session.events.length).toBe(events1.length + 1)
     expect(a2.session.firstLiveSeq).toBe(events1.length)
-    expect(a2.session.events.at(-1)?.type).toBe('session/inherited')
+    expect(a2.session.events.at(-1)?.type).toBe('session/end-seed')
     const replay = new Session(SessionId('replay'), events1)
     expect(a2.session.deriveMessages()).toEqual(replay.deriveMessages())