Remove /knowledge/path; folded into /settings

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

internal/web/web.go

@@ -74,7 +74,6 @@ func (s *Server) Router() *gin.Engine {
 	r.POST("/end", s.handleEnd)
 	r.POST("/refocus", s.handleRefocus)
 	r.POST("/ontask", s.handleOnTask)
-	r.POST("/knowledge/path", s.handleKnowledgePath)
 	r.GET("/settings", s.handleGetSettings)
 	r.POST("/settings", s.handlePostSettings)
 	r.GET("/fs/browse", s.handleBrowse)
@@ -149,24 +148,6 @@ func (s *Server) handleCommitment(c *gin.Context) {
 	s.respond(c, err)
 }
 
-type knowledgePathRequest struct {
-	Path string `json:"path"`
-}
-
-// handleKnowledgePath repoints the profile file at runtime (session-only). It
-// mutates config, not commitment state, so it never returns a transition error;
-// it just sets the path, re-loads, and broadcasts the refreshed state.
-func (s *Server) handleKnowledgePath(c *gin.Context) {
-	var req knowledgePathRequest
-	if err := c.ShouldBindJSON(&req); err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid json"})
-		return
-	}
-	s.ctrl.SetKnowledgePath(req.Path)
-	s.broadcast()
-	c.Data(http.StatusOK, "application/json", []byte(s.stateJSON()))
-}
-
 func (s *Server) handleComplete(c *gin.Context) {
 	s.cancelExpiry()
 	s.respond(c, s.ctrl.Complete())

internal/web/web_test.go

@@ -14,6 +14,7 @@ import (
 	"antidrift/internal/evidence"
 	"antidrift/internal/knowledge"
 	"antidrift/internal/session"
+	"antidrift/internal/settings"
 	"antidrift/internal/tasks"
 
 	"github.com/gin-gonic/gin"
@@ -398,12 +399,17 @@ func TestEnforceTogglePutsEnforcedOnTheWire(t *testing.T) {
 func TestKnowledgePathSelectionReloads(t *testing.T) {
 	s := newTestServer(t)
 	s.ctrl.SetKnowledge(stubSource{profile: knowledge.Profile{Path: "/default"}})
+	s.SetSettings(filepath.Join(t.TempDir(), "settings.json"),
+		settings.Settings{}, func(ss settings.Settings) error {
+			s.ctrl.SetKnowledgePath(ss.KnowledgePath)
+			return nil
+		})
 	r := s.Router()
 	if w := post(t, r, "/planning", ""); w.Code != http.StatusOK {
 		t.Fatalf("/planning code %d", w.Code)
 	}
-	if w := post(t, r, "/knowledge/path", `{"path":"/custom/profile.md"}`); w.Code != http.StatusOK {
-		t.Fatalf("/knowledge/path code %d body %s", w.Code, w.Body.String())
+	if w := post(t, r, "/settings", `{"ai_backend":"claude","marvin_cmd":"","knowledge_path":"/custom/profile.md"}`); w.Code != http.StatusOK {
+		t.Fatalf("/settings code %d body %s", w.Code, w.Body.String())
 	}
 	deadline := time.Now().Add(2 * time.Second)
 	for time.Now().Before(deadline) {