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fix(session): drop the <context> envelope and project context verbatim

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context/message previously defaulted to a <context source="…">…</context>
wrapper. No model is trained on a <context> tag either, and message
framing does not belong on the session surface: the surface projects the
durable log, and a caller that wants a frame formats its own content —
which the one heavy producer (workspace-context) already does with its own
<system-reminder> frame, opting out via 'raw'. The tag only added
machinery — ContextEnvelope plus an envelope field threaded through
InjectOptions, HookContext, the context/message event, and the agent-loop
inject/additionalContexts plumbing.

context/message now projects its content verbatim as a user-role message,
sharing one deriveEventMessage case with user/message and steering/message.
ContextEnvelope and every envelope field are removed; context/message.meta
still carries durable, model-hidden JSON state. Regenerated catalogs and
website API; refreshed the three affected keyless snapshots (envelope field
only; timestamps unchanged).

Broadens and renames the steering Agent Note to cover both envelope
removals as one decision.

Agent Note: .agents/notes/implemented/simplification/2026-07-20-unwrap-injected-content-envelopes.md
This commit is contained in:
Turtle
2026-07-20 14:37:04 +08:00
parent b25b78fd02
commit f593ef5ab5
47 changed files with 230 additions and 266 deletions
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8
packages/core/session/tests/session.spec.ts
View File

@@ -48,7 +48,7 @@ describe('Session', () => {
expect(structuredClone(turnEnd.data.reason)).toEqual({ kind: 'max-tokens' })
})
it('renders context messages tagged and steering messages as plain user content', () => {
it('renders context and steering messages as plain user content', () => {
const session = new Session(SessionId('s2'))
session.append('context/message', {
content: [{ type: 'text', text: 'file changed: a.ts' }],
@@ -62,13 +62,12 @@ describe('Session', () => {
const [contextMessage, steeringMessage] = session.deriveMessages()
expect(contextMessage!.role).toBe('user')
expect(contextMessage!.content[0]).toMatchObject({ type: 'text', text: '<context source="plugin">' })
expect(contextMessage!.content.at(-1)).toMatchObject({ type: 'text', text: '</context>' })
expect(contextMessage!.content).toEqual([{ type: 'text', text: 'file changed: a.ts' }])
expect(steeringMessage!.role).toBe('user')
expect(steeringMessage!.content).toEqual([{ type: 'text', text: 'focus on tests' }])
})
it('renders raw context without a generic envelope while preserving structured metadata', () => {
it('keeps context meta durable in the event while hiding it from the projection', () => {
const session = new Session(SessionId('s2-raw'))
const meta = {
kind: 'workspace-instructions',
@@ -78,7 +77,6 @@ describe('Session', () => {
session.append('context/message', {
content: [{ type: 'text', text: '<system-reminder>Additional instructions from: pkg/AGENTS.md</system-reminder>' }],
source: { kind: 'plugin', plugin: 'workspace-context' },
envelope: 'raw',
meta,
}, { surfaceOp: 'append' })

2
packages/core/session/tests/surface.spec.ts
View File

@@ -369,7 +369,7 @@ describe('deriveMessages with surface', () => {
s.append('steering/message', { turn: 1, content: [{ type: 'text', text: 'focus' }], source: { kind: 'user' } }, { surfaceOp: 'append' })
const messages = s.deriveMessages()
expect(messages).toHaveLength(2)
expect(messages[0]!.content[0]).toMatchObject({ type: 'text', text: '<context source="plugin">' })
expect(messages[0]!.content).toEqual([{ type: 'text', text: 'file changed' }])
expect(messages[1]!.content).toEqual([{ type: 'text', text: 'focus' }])
})
})