refactor(notes): decompose Notes into feature-owned modules (#6713)

* refactor(notes): decompose Notes into feature-owned modules

* fix(notes): avoid HTML interpolation in reminder picker

* docs(notes): drop checkpoint archives, session logs and publication drafts

The N0-N6 tarballs and raw pytest/node logs are not read by any script or
test, and the logs carry absolute home-directory paths. Once squashed into
dev they would stay in history for good. notes-pr.md and notes-issue.md
were the drafts used to open #6712 and #6713, not documentation.

notes-validation.md keeps the counts, the checkpoint hashes and
implementation.sha256 as the record; local interpreter paths and the local
Docker image name are replaced with portable placeholders.

* fix(notes): keep the state store raw and stop masonry re-observing after close

- state: writes built from views (filter, spread, splice) stored nested
  read-only views in the store, so structuredClone on a stored note threw
  DataCloneError. Store writes now unwrap nested views.
- layout: a save that resolves after closePanel re-renders the leaving pane
  and re-created the masonry ResizeObserver that teardown had disposed.
  Skip creating it once Notes is closed.
- index.js: drop 30 imported or declared names that were never used and
  group the imports at the top. Import order is unchanged.
- Revert unrelated punctuation edits in .gitattributes and keep the header
  comment and docstring first in compare/vote.js and
  test_notes_dom_xss_helpers.py.

Both fixes have a node test that fails on the previous head.

* test(notes): make script rejection assertion case-insensitive

Address CodeQL js/bad-tag-filter alert #1150 in test-only assertion and refresh Notes evidence manifest checksum.

---------

Co-authored-by: Léo <leograndcontact@gmail.com>

static/js/features/notes/application/agentActions.js

@@ -0,0 +1,67 @@
+/** Create an agent session, link it to a note and drain its background stream. */
+import { _noteToAgentPrompt } from '../domain/noteRules.js';
+export function createAgentActions({
+  _patchNote,
+  _renderNotes,
+  api,
+  app,
+  createFormData,
+  state,
+  streamComplete,
+  uiModule
+}) {
+  async function _agentSolveNote(id) {
+    const note = state.notes.find(n => n.id === id);
+    if (!note) return;
+    const prompt = _noteToAgentPrompt(note);
+    if (!prompt) { uiModule.showToast('Nothing to solve — note is empty'); return; }
+    try {
+      const dc = await (await api.defaultChat()).json();
+      if (!dc.endpoint_url || !dc.model) { uiModule.showError('No default chat model configured'); return; }
+
+      // 1. Create the session server-side (no UI switch). skip_validation
+      //    avoids re-probing : the default-chat endpoint is already known good.
+      const label = (note.title || (Array.isArray(note.items) && note.items[0]?.text) || 'todo').slice(0, 40);
+      const csFd = createFormData();
+      csFd.append('name', 'Agent: ' + label);
+      csFd.append('endpoint_url', dc.endpoint_url);
+      csFd.append('model', dc.model);
+      if (dc.endpoint_id) csFd.append('endpoint_id', dc.endpoint_id);
+      csFd.append('skip_validation', 'true');
+      const csRes = await api.createSession(csFd);
+      if (!csRes.ok) { uiModule.showError('Could not create agent session'); return; }
+      const sess = await csRes.json();
+      const sid = sess.id;
+
+      // 2. Link the session to the note right away so the tag appears.
+      const n = state.notes.find(x => x.id === id);
+      if (n) app.mergeNote(n, { agent_session_id: sid });
+      _renderNotes();
+      _patchNote(id, { agent_session_id: sid }).catch(() => {});
+
+      // 3. Kick off the agent run in the background. POST to chat_stream in
+      //    agent mode and drain the SSE so the server runs the loop to
+      //    completion + saves : without rendering anything in the chat UI.
+      const fd = createFormData();
+      fd.append('message', prompt);
+      fd.append('session', sid);
+      fd.append('mode', 'agent');
+      fd.append('disabled_tools', JSON.stringify(['manage_notes']));
+      api.startChat(fd)
+        .then(async (res) => {
+          if (!res.ok || !res.body) return;
+          const reader = res.body.getReader();
+          // Drain to completion (server finishes + persists the run).
+          while (true) { const { done } = await reader.read(); if (done) break; }
+          streamComplete(sid);
+        })
+        .catch(() => {});
+
+      uiModule.showToast('Agent working in background — tap the Agent tag when ready');
+    } catch (e) {
+      uiModule.showError('Agent failed: ' + (e.message || e));
+    }
+  }
+
+  return { _agentSolveNote };
+}