diff --git a/docs/ROADMAP.org b/docs/ROADMAP.org
index 5735cb9..3632269 100644
--- a/docs/ROADMAP.org
+++ b/docs/ROADMAP.org
@@ -385,7 +385,20 @@ Unified control plane for hooks, cron, and complexity-based routing.
 - Hooked into heartbeat for cron processing
 - Rule-based tier classifier (overrideable via ~*tier-classifier*~)
 
-**** TODO Context Manager (project scoping)
+**** DONE Context Manager (project scoping)
+CLOSED: [2026-05-05 Tue]
+:PROPERTIES:
+:ID:       id-context-manager-scoping
+:CREATED:  [2026-05-05 Tue]
+:END:
+:LOGBOOK:
+- State "DONE" from "TODO" [2026-05-05 Tue]
+:END:
+Stack-based project focusing with persistence.
+- ~push-context~/~pop-context~/~with-context~ stack operations
+- ~current-scope~ wired into perceive gate ~*scope-resolver*~
+- ~/focus~/~/scope~/~/unfocus~ TUI commands
+- Context stack persisted to ~~/.cache/passepartout/context.lisp~, auto-restores on boot
 
 **** DONE Model-Tier Routing (cost optimization) 
 CLOSED: [2026-05-03 Sun 16:00]
@@ -421,24 +434,43 @@ Extend memory-object with ~:scope~ property.
 - ~:memex~ (permanent knowledge), ~:session~ (ephemeral), ~:project~ (current work)
 - Scope-aware retrieval in memory layer
 
-**** TODO Asynchronous Embedding Gateway
-Provider-agnostic vector generation (Ollama, llama.cpp, OpenAI).
-Edits mark nodes as ~:vector :pending~; background worker batches and updates Merkle tree.
+**** DONE Asynchronous Embedding Gateway
+CLOSED: [2026-05-05 Tue]
+:PROPERTIES:
+:ID:       id-async-embedding
+:CREATED:  [2026-05-02 Sat 23:00]
+:END:
+:LOGBOOK:
+- State "DONE" from "TODO" [2026-05-05 Tue]
+:END:
+Provider-agnostic vector generation (Ollama, OpenAI, hashing fallback).
+- Three backends: local (Ollama-compatible), openai (/v1/embeddings), hashing (SHA-256)
+- ~embeddings-compute~ and ~*embedding-backend*~ for runtime provider selection
+- ~ingest-ast~ populates vectors at object creation time
+- ~mark-vector-stale~ marks vectors as ~:pending~ and queues for re-embedding
+- ~embed-all-pending~ drains queue, computes vectors, stores in ~*memory-store*~
+- Cron job registered with orchestrator: runs every 10m on ~:reflex~ tier
+- ~EMBEDDING_PROVIDER~ env var for provider selection
+- Registered as proper skill (~defskill~~:passepartout-system-model-embedding~)
 
-**** TODO TUI Experience (Daily Driver Quality)
-The TUI is a standalone Croatoan app in ~org/gateway-tui.org~.
-None of these changes require daemon modifications — the protocol between TUI and
-daemon (port 9105, framed plists) is stable.
-
-- P0: Chat scrollback (Page Up/Down) — ~2h
-- P0: Input history (up/down arrows) — ~1h
-- P1: Status bar (daemon, model, time) — ~3h
-- P1: Message rendering (timestamps, colors, wrapping) — ~2h
-- P2: Command palette (/help redesign) — ~4h
-- P2: Multi-line input (Shift+Enter) — ~3h
-- P3: Background activity indicator — ~2h
-- P4: Tab completion for / commands — ~3h
-- P4: Configurable theme — ~4h
+**** DONE TUI Experience (Daily Driver Quality)
+CLOSED: [2026-05-05 Tue]
+:PROPERTIES:
+:ID:       id-tui-experience
+:CREATED:  [2026-05-02 Sat 23:00]
+:END:
+:LOGBOOK:
+- State "DONE" from "TODO" [2026-05-05 Tue]
+:END:
+All P0-P4 items implemented:
+- P0: Chat scrollback (Page Up/Down), Input history (up/down arrows)
+- P1: Status bar (connection, mode, msg count, scroll, activity indicator)
+- P1: Message rendering (timestamps, colors, role icons)
+- P2: Command palette (~/help~ command listing)
+- P2: Multi-line input (~\ + Enter~ inserts newline)
+- P3: Background activity indicator (~…thinking~ spinner)
+- P4: Tab completion for all ~/~~ commands
+- P4: Configurable theme (~*tui-theme*~ plist, ~~/theme~~ command)
 
 **** DONE Human-in-the-Loop (HITL)
 CLOSED: [2026-05-03 Sun 14:00]
diff --git a/lisp/core-defpackage.lisp b/lisp/core-defpackage.lisp
index 3bcef13..a8011a9 100644
--- a/lisp/core-defpackage.lisp
+++ b/lisp/core-defpackage.lisp
@@ -92,6 +92,7 @@
        #:embed-all-pending
        #:embedding-backend-hashing
        #:embeddings-compute
+       #:mark-vector-stale
      #:skill
    #:skill-name
    #:skill-priority
diff --git a/lisp/core-skills.lisp b/lisp/core-skills.lisp
index f74b13c..0208423 100644
--- a/lisp/core-skills.lisp
+++ b/lisp/core-skills.lisp
@@ -98,7 +98,6 @@
                                     (string= n "core-manifest")
                                     (string= n "security-dispatcher")
                                     (string= n "system-model-router")
-                                    (string= n "system-model-embedding")
                                     (string= n "system-model-explorer")
                                     (string= n "gateway-tui"))))
                            all-files))
diff --git a/lisp/system-model-embedding.lisp b/lisp/system-model-embedding.lisp
index 8f1a42a..9cef9ad 100644
--- a/lisp/system-model-embedding.lisp
+++ b/lisp/system-model-embedding.lisp
@@ -106,6 +106,32 @@
 
 (log-message "EMBEDDING: Gateway loaded with provider ~a" *embedding-provider*)
 
+(defun mark-vector-stale (id &optional content)
+  "Mark a memory object's vector as :pending and queue it for re-embedding.
+When content is not supplied, reads from the object in *memory-store*."
+  (let* ((obj (gethash id *memory-store*))
+         (text (or content (and obj (memory-object-content obj)))))
+    (when obj
+      (setf (memory-object-vector obj) :pending))
+    (when text
+      (push (list :id id :text text) *embedding-queue*)
+      (log-message "EMBEDDING: Marked ~a vector stale, queued for re-embed" id))
+    (or obj text)))
+
+(defskill :passepartout-system-model-embedding
+  :priority 70
+  :trigger (lambda (ctx) (declare (ignore ctx)) nil))
+
+;; Register periodic batch embedding via cron (when orchestrator available)
+(when (fboundp 'orchestrator-register-cron)
+  (handler-case
+      (orchestrator-register-cron :embed-batch
+                                  "<2026-05-05 Tue +10m>"
+                                  'embed-all-pending
+                                  :reflex)
+    (error (c)
+      (log-message "EMBEDDING: Cron registration failed: ~a" c))))
+
 (eval-when (:compile-toplevel :load-toplevel :execute)
   (ql:quickload :fiveam :silent t))
 
@@ -144,3 +170,19 @@
     (fiveam:is (= 1 (length *embedding-queue*)))
     (embed-all-pending)
     (fiveam:is (null *embedding-queue*))))
+
+(fiveam:test test-mark-vector-stale
+  "Contract 4: mark-vector-stale sets vector to :pending and queues for re-embed."
+  (let ((*embedding-queue* nil))
+    ;; Create an object in memory with a vector
+    (let ((obj (make-memory-object :id "stale-test" :content "stale content"
+                                   :vector #(1.0 2.0 3.0))))
+      (setf (gethash "stale-test" *memory-store*) obj)
+      (mark-vector-stale "stale-test")
+      (fiveam:is (eq :pending (memory-object-vector obj)))
+      (fiveam:is (= 1 (length *embedding-queue*)))
+      (let ((item (first *embedding-queue*)))
+        (fiveam:is (string= "stale-test" (getf item :id)))
+        (fiveam:is (string= "stale content" (getf item :text))))
+      ;; Clean up
+      (remhash "stale-test" *memory-store*))))
diff --git a/org/core-defpackage.org b/org/core-defpackage.org
index 71d0c42..a048f42 100644
--- a/org/core-defpackage.org
+++ b/org/core-defpackage.org
@@ -117,6 +117,7 @@ The package definition. All public symbols are exported here.
        #:embed-all-pending
        #:embedding-backend-hashing
        #:embeddings-compute
+       #:mark-vector-stale
      #:skill
    #:skill-name
    #:skill-priority
diff --git a/org/core-skills.org b/org/core-skills.org
index 4aead64..ce3a776 100644
--- a/org/core-skills.org
+++ b/org/core-skills.org
@@ -201,7 +201,6 @@ Both ~.org~ and ~.lisp~ files are included. For each skill, the ~.org~ file supp
                                     (string= n "core-manifest")
                                     (string= n "security-dispatcher")
                                     (string= n "system-model-router")
-                                    (string= n "system-model-embedding")
                                     (string= n "system-model-explorer")
                                     (string= n "gateway-tui"))))
                            all-files))
diff --git a/org/system-model-embedding.org b/org/system-model-embedding.org
index cf7db24..bec13fa 100644
--- a/org/system-model-embedding.org
+++ b/org/system-model-embedding.org
@@ -142,6 +142,38 @@ This replaces the old ~system-embedding-gateway~ with the same logic but renamed
 (log-message "EMBEDDING: Gateway loaded with provider ~a" *embedding-provider*)
 #+end_src
 
+** Stale vector marking
+#+begin_src lisp
+(defun mark-vector-stale (id &optional content)
+  "Mark a memory object's vector as :pending and queue it for re-embedding.
+When content is not supplied, reads from the object in *memory-store*."
+  (let* ((obj (gethash id *memory-store*))
+         (text (or content (and obj (memory-object-content obj)))))
+    (when obj
+      (setf (memory-object-vector obj) :pending))
+    (when text
+      (push (list :id id :text text) *embedding-queue*)
+      (log-message "EMBEDDING: Marked ~a vector stale, queued for re-embed" id))
+    (or obj text)))
+#+end_src
+
+** Skill Registration and Cron
+#+begin_src lisp
+(defskill :passepartout-system-model-embedding
+  :priority 70
+  :trigger (lambda (ctx) (declare (ignore ctx)) nil))
+
+;; Register periodic batch embedding via cron (when orchestrator available)
+(when (fboundp 'orchestrator-register-cron)
+  (handler-case
+      (orchestrator-register-cron :embed-batch
+                                  "<2026-05-05 Tue +10m>"
+                                  'embed-all-pending
+                                  :reflex)
+    (error (c)
+      (log-message "EMBEDDING: Cron registration failed: ~a" c))))
+#+end_src
+
 * Contract
 
 1. (embeddings-compute text): produces a vector (single-float array) for
@@ -151,6 +183,10 @@ This replaces the old ~system-embedding-gateway~ with the same logic but renamed
    an 8-element single-float vector deterministically from SHA-256.
 3. (embed-all-pending): drains ~*embedding-queue*~, computes vectors for
    all queued objects, and stores them in ~*memory-store*~ entries.
+4. (mark-vector-stale id &optional content): sets ~:vector~ to ~:pending~
+   and pushes object to ~*embedding-queue*~ for background re-embedding.
+5. Cron: ~embed-all-pending~ is registered with the orchestrator to run
+   on ~:reflex~ tier every 10 minutes for background batch processing.
 
 * Test Suite
 #+begin_src lisp
@@ -192,4 +228,20 @@ This replaces the old ~system-embedding-gateway~ with the same logic but renamed
     (fiveam:is (= 1 (length *embedding-queue*)))
     (embed-all-pending)
     (fiveam:is (null *embedding-queue*))))
+
+(fiveam:test test-mark-vector-stale
+  "Contract 4: mark-vector-stale sets vector to :pending and queues for re-embed."
+  (let ((*embedding-queue* nil))
+    ;; Create an object in memory with a vector
+    (let ((obj (make-memory-object :id "stale-test" :content "stale content"
+                                   :vector #(1.0 2.0 3.0))))
+      (setf (gethash "stale-test" *memory-store*) obj)
+      (mark-vector-stale "stale-test")
+      (fiveam:is (eq :pending (memory-object-vector obj)))
+      (fiveam:is (= 1 (length *embedding-queue*)))
+      (let ((item (first *embedding-queue*)))
+        (fiveam:is (string= "stale-test" (getf item :id)))
+        (fiveam:is (string= "stale content" (getf item :text))))
+      ;; Clean up
+      (remhash "stale-test" *memory-store*))))
 #+end_src