feat(feedback): add a /feedback command recorded through the command plane

Register a global `/feedback` command so a user can record a remark about the
session without spending a model turn. `/feedback <text>` acknowledges; empty
or whitespace-only input returns a usage error.

The plugin appends no session event of its own. `dsh-commands` already writes
a `command/run` / `command/done` pair for every dispatched command, carrying
the verbatim text and the settled outcome, and both records are log-only and
non-surface. The feedback is therefore durably in the session log and invisible
to the model without this package touching the log format.

Text is never parsed, so `/feedback /plan felt slow` records that literal
content. Nothing consumes the records; capture is deliberately inert.

New group `packages/feedback/` — no existing group owns feedback capture. Its
row raises the packages/README.md word ceiling by 10, which had no headroom;
one redundant sentence there was removed to offset most of the cost.

packages/examples/tui-demo/package.json

@@ -32,6 +32,7 @@
     "@deepseek-ai/dsh-agent-loop": "^0.0.1",
     "@deepseek-ai/dsh-commands": "^0.0.1",
     "@deepseek-ai/dsh-command-goal": "^0.0.1",
+    "@deepseek-ai/dsh-command-feedback": "^0.0.1",
     "@deepseek-ai/dsh-agent-spine-demo": "^0.0.1",
     "@deepseek-ai/dsh-invariants": "^0.0.1",
     "@deepseek-ai/dsh-llm": "^0.0.1",
@@ -55,6 +56,7 @@
     "@deepseek-ai/dsh-agent-loop": "workspace:^",
     "@deepseek-ai/dsh-commands": "workspace:^",
     "@deepseek-ai/dsh-command-goal": "workspace:^",
+    "@deepseek-ai/dsh-command-feedback": "workspace:^",
     "@deepseek-ai/dsh-agent-spine-demo": "workspace:^",
     "@deepseek-ai/dsh-invariants": "workspace:^",
     "@deepseek-ai/dsh-llm": "workspace:^",

packages/examples/tui-demo/src/index.ts

@@ -1,6 +1,6 @@
 /**
  * Full-screen terminal app: the default agent spine ({@link @deepseek-ai/dsh-agent-spine-demo})
- * plus persisted goals, human commands, JSONL persistence, keyboard-backed
+ * plus persisted goals, human commands including `/feedback`, JSONL persistence, keyboard-backed
  * user interaction, and one pre-created agent whose exact session identity the
  * TUI drives. Swappable adapters, executors, optional tools, and HMR stay in the leaf. This Loader plugin
  * intentionally exposes named exports only; a default export would hide its
@@ -16,6 +16,7 @@ import { SessionId } from '@deepseek-ai/dsh-session'
 import ToolRegistry, { type Config as ToolsConfig } from '@deepseek-ai/dsh-tools'
 import CommandService from '@deepseek-ai/dsh-commands'
 import * as commandGoal from '@deepseek-ai/dsh-command-goal'
+import * as commandFeedback from '@deepseek-ai/dsh-command-feedback'
 import * as agentCore from '@deepseek-ai/dsh-agent-spine-demo'
 import * as workspaceContext from '@deepseek-ai/dsh-workspace-context'
 import SessionPersistenceJsonl, {
@@ -122,6 +123,7 @@ export function composeTuiApp(ctx: Context, config: Config): void {
   const goals = config.goals ?? {}
   const persistenceRoot = config.persistenceRoot ?? DEFAULT_PERSISTENCE_ROOT
   ctx.plugin(CommandService)
+  ctx.plugin(commandFeedback)
   if (goals !== false) ctx.plugin(commandGoal)
   ctx.plugin(SessionPersistenceJsonl, {
     root: persistenceRoot,

packages/examples/tui-demo/tests/tui-agent.spec.ts

@@ -49,6 +49,7 @@ describe('dsh-tui-demo app', () => {
 
     expect(calls.map(call => call.name)).toEqual([
       'CommandService',
+      'command-feedback',
       'command-goal',
       'SessionPersistenceJsonl',
       'session-checkpoint-policy',
@@ -61,14 +62,14 @@ describe('dsh-tui-demo app', () => {
       'tool-ask-user',
     ])
     expect(calls[0]?.config).toBeUndefined()
-    expect(calls[2]?.config).toEqual({ root: '/tmp/tui-sessions', compression: 'none' })
-    expect(calls[4]?.config).toEqual({ path: join('/tmp/tui-sessions', 'session-query.db') })
-    expect(calls[5]?.config).toEqual({
+    expect(calls[3]?.config).toEqual({ root: '/tmp/tui-sessions', compression: 'none' })
+    expect(calls[5]?.config).toEqual({ path: join('/tmp/tui-sessions', 'session-query.db') })
+    expect(calls[6]?.config).toEqual({
       maxReferences: 2,
       candidateLimit: 7,
       maxReferenceBytes: 1234,
     })
-    const tuiConfig = calls[8]?.config as { sessionId: string }
+    const tuiConfig = calls[9]?.config as { sessionId: string }
     expect(tuiConfig).toMatchObject({
       welcome: 'TUI ready',
       resumeCommand: 'dsh --resume {session}',
@@ -76,7 +77,7 @@ describe('dsh-tui-demo app', () => {
       maxToolOutputLines: 3,
     })
     expect(tuiConfig.sessionId).toMatch(/^main-session-[0-9a-f-]{36}$/)
-    const spineConfig = calls[9]?.config as {
+    const spineConfig = calls[10]?.config as {
       readonly agents: Array<Record<string, unknown>>
       readonly goals: Record<string, never>
       readonly maxParallelToolCalls: number
@@ -109,11 +110,11 @@ describe('dsh-tui-demo app', () => {
       workspaceContext: false,
     })
 
-    expect(calls[2]?.config).toEqual({ root: './.sessions' })
-    expect(calls[5]?.config).toEqual({})
+    expect(calls[3]?.config).toEqual({ root: './.sessions' })
+    expect(calls[6]?.config).toEqual({})
     // No configured welcome forwards none: the TUI banner sweeps in without a subtitle.
-    expect(calls[8]?.config).toEqual({ sessionId: 'persisted-session' })
-    expect((calls[9]?.config as { agents: Array<Record<string, unknown>> }).agents[0]).toMatchObject({
+    expect(calls[9]?.config).toEqual({ sessionId: 'persisted-session' })
+    expect((calls[10]?.config as { agents: Array<Record<string, unknown>> }).agents[0]).toMatchObject({
       id: 'main',
       resumeSessionId: 'persisted-session',
     })
@@ -129,12 +130,14 @@ describe('dsh-tui-demo app', () => {
       workspaceContext: false,
     })
 
-    const tuiConfig = calls[7]?.config as { sessionId: string }
+    const tuiConfig = calls[8]?.config as { sessionId: string }
     expect(tuiConfig.sessionId).toMatch(/^main-session-[0-9a-f-]{36}$/)
-    expect((calls[8]?.config as { agents: Array<Record<string, unknown>> }).agents[0])
+    expect((calls[9]?.config as { agents: Array<Record<string, unknown>> }).agents[0])
       .toMatchObject({ sessionId: tuiConfig.sessionId })
     expect(calls.map(call => call.name)).not.toContain('command-goal')
-    expect(calls[8]?.config).toMatchObject({ goals: false })
+    // `/feedback` is unconditional: disabling goals must not remove it.
+    expect(calls.map(call => call.name)).toContain('command-feedback')
+    expect(calls[9]?.config).toMatchObject({ goals: false })
   })
 
   it('has the namespace-plugin export shape so the Loader keeps its schema', () => {

packages/examples/tui-demo/tsconfig.json

@@ -35,6 +35,9 @@
     {
       "path": "../../goal/command-goal"
     },
+    {
+      "path": "../../feedback/command-feedback"
+    },
     {
       "path": "../agent-spine-demo"
     },