Feat v0.4.7 note graph (#29)

Co-authored-by: Jeffrey Smith <jasafpro@gmail.com>
Co-committed-by: Jeffrey Smith <jasafpro@gmail.com>

packages/notes/script.star

@@ -133,6 +133,10 @@ def on_request(req):
     if method == "POST" and path == "/notes/move":
         return _move_note(req)
 
+    # GET /graph — full graph data for visualization
+    if method == "GET" and path == "/graph":
+        return _get_graph()
+
     # ── Link routes ──────────────────────────
     # GET /links/:note_id — outgoing links
     if method == "GET" and path.startswith("/links/"):
@@ -463,6 +467,44 @@ def _get_backlinks(note_id):
     return _resp(200, {"data": items})
 
 
+def _get_graph():
+    """Return all non-archived notes as nodes and resolved links as edges."""
+    all_notes = db.query("notes", filters={"archived": 0}, limit=5000)
+    notes = all_notes or []
+
+    # batch-fetch tags
+    note_ids = [n.get("id", "") for n in notes]
+    tags_map = _tags_for_notes(note_ids)
+
+    # build nodes + id set for edge filtering
+    nodes = []
+    note_id_set = {}
+    for n in notes:
+        nid = n.get("id", "")
+        note_id_set[nid] = True
+        nodes.append({
+            "id":        nid,
+            "title":     n.get("title", "Untitled"),
+            "folder_id": _str(n.get("folder_id", "")),
+            "tags":      tags_map.get(nid, []),
+        })
+
+    # fetch links, keep only resolved (both endpoints exist)
+    all_links = db.query("links", limit=10000)
+    edges = []
+    for link in (all_links or []):
+        src = _str(link.get("source_id", ""))
+        tgt = _str(link.get("target_id", ""))
+        if src and tgt and src in note_id_set and tgt in note_id_set:
+            edges.append({
+                "source": src,
+                "target": tgt,
+                "text":   _str(link.get("link_text", "")),
+            })
+
+    return _resp(200, {"nodes": nodes, "edges": edges})
+
+
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