diff --git a/README.md b/README.md
index 38d20ea..9b5688f 100644
--- a/README.md
+++ b/README.md
@@ -23,6 +23,17 @@ go test ./...
 
 ## Status
 
+M6 (knowledge port): the planning coach now sharpens intents against who you
+actually are. A single profile file (`~/.antidrift/knowledge.md`, overridable
+via `ANTIDRIFT_KNOWLEDGE_FILE`) holds your standing context — priorities,
+values, what counts as good work — and the daemon loads it asynchronously on
+entering planning, mirroring the tasks fetch. The cached text grounds the AI
+coach prompt only; the drift judge and nudge are untouched, and the profile text
+never crosses the wire. A subtle planning-screen indicator shows whether the
+profile loaded and from where, with a "change" affordance to repoint at another
+file. It degrades gracefully — a missing, blank, or unreadable file just leaves
+the coach ungrounded, and planning still works.
+
 M3.5 (semantic nudge): the drift interceptor catches the *wrong app*, but not
 the *wrong work inside a right app*. M3.5 adds a third, ambient AI role that —
 only while you are on-task in an allowed app — periodically reads your recent
diff --git a/internal/web/static/app.css b/internal/web/static/app.css
index e7d9c95..d46e41f 100644
--- a/internal/web/static/app.css
+++ b/internal/web/static/app.css
@@ -116,3 +116,10 @@ input:focus { outline: 0; border-color: var(--accent); }
   cursor: pointer; text-align: left;
 }
 .task-chip:hover { border-color: var(--accent); color: var(--accent); }
+
+/* Planning: standing-profile grounding indicator */
+.knowline { opacity: 0.85; }
+.link {
+  background: none; border: none; padding: 0; font: inherit; font-size: 12px;
+  color: var(--accent); cursor: pointer; text-decoration: underline;
+}
diff --git a/internal/web/static/app.js b/internal/web/static/app.js
index 001df47..42376f3 100644
--- a/internal/web/static/app.js
+++ b/internal/web/static/app.js
@@ -157,12 +157,35 @@ function updatePlanningTasks(tasks) {
   });
 }
 
+// updatePlanningKnowledge renders the standing-profile grounding indicator and
+// a small "change" affordance to repoint the file. idle/nil renders nothing;
+// pending/ready/absent/error each show one quiet line. The profile text never
+// reaches the browser — only status, path, and size.
+function updatePlanningKnowledge(k) {
+  const el = document.getElementById('knowBand');
+  if (!el) return;
+  if (!k || k.status === 'idle') { el.innerHTML = ''; return; }
+  const base = (k.path || '').split('/').pop() || k.path || '';
+  let line;
+  if (k.status === 'pending') line = 'loading profile…';
+  else if (k.status === 'ready') line = `grounded by ${base} · ${k.chars} chars`;
+  else if (k.status === 'absent') line = `no profile (${k.path || 'unset'})`;
+  else line = 'profile unreadable';
+  el.innerHTML =
+    `<span class="knowline meta">${line}</span> <button type="button" class="link" id="knowChange">change</button>`;
+  document.getElementById('knowChange').onclick = () => {
+    const next = prompt('Profile file path (blank = default):', k.path || '');
+    if (next !== null) post('/knowledge/path', { path: next.trim() });
+  };
+}
+
 function render(state) {
   setStateAttr(state);
   const rs = state.runtime_state;
   if (rs === 'planning' && renderedState === 'planning') {
     updatePlanningCoach(state.coach);
     updatePlanningTasks(state.tasks);
+    updatePlanningKnowledge(state.knowledge);
     return;
   }
   if (rs === 'active' && renderedState === 'active') {
@@ -189,6 +212,7 @@ function render(state) {
         <div id="coachStatus" class="meta"></div>
       </div>
       <div class="band" id="tasksBand"></div>
+      <div class="band" id="knowBand"></div>
       <div class="band">
         <label>Next action</label><input id="na" placeholder="What exactly will you do?">
         <label>Success condition</label><input id="sc" placeholder="How do you know it's done?">
@@ -214,6 +238,7 @@ function render(state) {
     };
     updatePlanningCoach(state.coach);
     updatePlanningTasks(state.tasks);
+    updatePlanningKnowledge(state.knowledge);
 
   } else if (rs === 'active') {
     const c = state.commitment || {};