Give the assistant a standing memory file

A small operator-written file handed to the model at the start of every
conversation — who you are, how this install is set up, what has already been
decided. Injected ahead of the retrieved passages and marked operator-authored
so it outranks anything they contradict, and never cited as a source.

Deliberately not indexed and deliberately under DATA_DIR: it changes
constantly, vector similarity is the wrong way to retrieve things you were
told to remember, and gitignoring it keeps personal notes out of a pushed
repository. The character cap is a context budget — this text costs its share
of 16k on every single turn.

Plugin/unraid/api/ai.php

@@ -59,7 +59,9 @@
 // REQUEST
 //   GET  ?action=stats                    banner payload
 //   GET  ?action=poll&token=<hex32>       job state
+//   GET  ?action=memory_get               the operator memory file and its budget
 //   POST action=ask   question=…  [history=<JSON>] [kind=…] [think=0|1]
+//   POST action=memory_set memory=…       replace the memory file
 //   POST action=clear token=<hex32>       discard a finished job
 //
 // RESPONSE
@@ -131,6 +133,23 @@ if ($action === 'poll') {
     exit;
 }
 
+// ── memory ────────────────────────────────────────────────────────────────────
+if ($action === 'memory_get') {
+    $m = vv_ai_memory_read();
+    echo json_encode(['ok' => true, 'memory' => $m['text'], 'chars' => $m['chars'],
+                      'max' => vv_ai_memory_max(), 'exists' => $m['exists'],
+                      'path' => vv_ai_memory_path()]);
+    exit;
+}
+
+if ($action === 'memory_set') {
+    if (!$isPost) { http_response_code(405); echo json_encode(['ok' => false, 'error' => 'POST only']); exit; }
+    $r = vv_ai_memory_write((string)($_POST['memory'] ?? ''));
+    vv_ai_log('memory_set ' . ($r['ok'] ? 'ok chars=' . $r['chars'] : 'FAILED: ' . $r['error']));
+    echo json_encode($r + ['max' => vv_ai_memory_max()]);
+    exit;
+}
+
 // ── clear ─────────────────────────────────────────────────────────────────────
 if ($action === 'clear') {
     if (!$isPost) { http_response_code(405); echo json_encode(['ok' => false, 'error' => 'POST only']); exit; }