Merge branch 'fix/g07' into fix/integrated

# Conflicts:
#	internal/ipc/api.go
#	internal/ipc/client.go
#	internal/llm/client.go

internal/ipc/api.go

@@ -413,11 +413,17 @@ type SwapModelReq struct {
 // RolledBack is true when the requested model failed to load or would not answer
 // and the previous one was put back. In that case the call also returns an error
 // — the swap did not happen — and Model names the model still serving.
+//
+// NoBackend is the other failure and it is not a milder one: the rollback failed
+// too, no model is loaded, and every phrasing path is on its template fallback
+// with routing on the classifier. It is a separate field from RolledBack because
+// the two need opposite words on the page.
 type SwapModelResp struct {
 	Model      string `json:"model"`
 	ModelPath  string `json:"model_path"`
 	BaseURL    string `json:"base_url"`
 	RolledBack bool   `json:"rolled_back,omitempty"`
+	NoBackend  bool   `json:"no_backend,omitempty"`
 	TookMs     int64  `json:"took_ms"`
 }
 
@@ -433,6 +439,15 @@ type ModelStatusResp struct {
 	Swappable  []string `json:"swappable,omitempty"`
 }
 
+// PingResp — the answer to MethodPing. Alive is always true (the reply itself
+// is the proof); Locked says whether the daemon is still waiting for a passkey
+// assertion, which is the one state where a CoreAPI read cannot tell an
+// operator anything.
+type PingResp struct {
+	Alive  bool `json:"alive"`
+	Locked bool `json:"locked"`
+}
+
 type listTasksReq struct {
 	Status string `json:"status"` // "" all | "live" | candidate|open|done|dropped
 }
@@ -489,6 +504,10 @@ type kindNReq struct {
 	Kind string `json:"kind"`
 	N    int    `json:"n"`
 }
+type sourceNReq struct {
+	Prefix string `json:"prefix"`
+	N      int    `json:"n"`
+}
 type calendarEventsReq struct {
 	From time.Time `json:"from"`
 	To   time.Time `json:"to"`
@@ -646,6 +665,11 @@ type CoreAPI interface {
 	WriteNote(ctx context.Context, ts time.Time, text string, embedding []float32, source string) (int64, error)
 	QueryNotes(ctx context.Context, embedding []float32, k int) ([]Note, error)
 	RecentNotes(ctx context.Context, n int) ([]Note, error)
+	// RecentNotesFromSource — the newest n notes whose source starts with
+	// prefix. Notes Maven read rather than heard (rss:, crawl:) are excluded
+	// from recall, so this is the only way to reach them, and it keeps the feed
+	// answer from being crowded out of a fixed window by his own notes.
+	RecentNotesFromSource(ctx context.Context, prefix string, n int) ([]Note, error)
 
 	// ProposeTool drafts an inert 'proposed' tool scaffold (maven-callable);
 	// returns whether a new proposal was written. EnableTool fills cmd +