phase: 89_source_ignore_paths

All verification complete — TODO.md was already cleared in the roadmap commit; the two extra unit-test diffs are necessary fake-signature adaptations for the new keywords. Everything is green, no fixes were needed.

## Phase 89 — final verification pass: ALL GREEN

**Verified (all 6 task files present in `complete/`):**
- `git_sources.ignore_paths` JSONB column + migration 0013; `alembic downgrade -1 && upgrade head` round-trips (head `0013`)
- Importer: `normalize_ignore_path`/`is_ignored`/`_ignore_for_root`, `ignore` in walk + progress pre-walk, `ignore_by_root` in `import_sources`
- API: GET/POST carry list; admin-only `PATCH` (replace, 404/422 fixed details, anonymous 403)
- Pipelines wired: `_run_sync`, `_run_upload` re-upload, `scripts/import_docs.py`
- Sources-page box: dialog, §7.4 save lifecycle, `N ignored` tag, a11y; env rows get no box

**Test/lint results:**
- `uv run pytest` → 1808 passed
- `uv run pytest --cov=app --cov-report=term-missing` → TOTAL **99%** (>90%)
- `uv run pytest tests/e2e/test_source_ignore_paths.py -v --no-cov` → 6 passed (isolated, DB up)
- Regressions in isolation: `test_git_sources_admin` 6, `test_archive_upload_sources` 5, `test_sync_button` 3, `test_smoke` 3 — all passed
- `uv run ruff check . && uv run pyright` → clean (0 errors)

**Completion criteria:** box→PATCH 200→count+GET round-trip ✅ · sync excludes `ignore/` (no docs/chunks/embeddings/summaries) + prunes newly-ignored (pruned==2) ✅ · no-mid-path rule E2E ✅ · PATCH 404/422/replace/clear/403 ✅ · full gate green ✅ · commit + phase move left to harness per rules.

**Deviations:** none blocking — E2E pins `files == 4` (overview's "5" was an off-by-one vs its own 6-file tree, documented in-test); `tests/unit/test_importer.py` + `test_sync_button.py` test-double fakes extended for the new keywords (needed for the suite to stay green).

**Next pending phase:** none — `todo/` holds only this phase.

frontend/assets/git-sources.js

@@ -143,6 +143,35 @@
  * gate and never fetches /api/git-sources (the Sources-page gate
  * pattern).
  *
+ * Phase 89 (task 05) — the per-source ignore-paths editor: every
+ * STORED row (s.id truthy — env-fallback rows carry NO button, A3:
+ * nothing is stored to edit) gets an "Ignore paths" button in the
+ * actions cell (left of Remove) that opens the page-local alertdialog
+ * (#ignore-editor-dialog — the EXACT #remove-confirm-dialog pattern,
+ * phase 69): #ignore-editor-source names the source (textContent ONLY
+ * — the same `value` expression makeRow uses — URLs may embed
+ * user:pass@ credentials, phase 32), the mono textarea prefills the
+ * row's stored list (one path per line — the phase-89 A1 prefix rule,
+ * stated in plain words in the helper copy), and focus lands on
+ * Cancel (the safe default); Escape / Cancel / the dim backdrop close
+ * as CANCEL (no request — focus returns to the row's trigger button).
+ * "Save" runs the §7.4 in-flight lifecycle: both buttons disable +
+ * the save relabels "Saving…" while the PATCH
+ * /api/git-sources/{id} is out (blank lines in the box are separators,
+ * not entries — split + trim + drop empty client-side; the server
+ * still rejects empty entries defensively, A4). 200 → close (focus
+ * return), loadSources (the row's "N ignored" count tag lands — the
+ * A5 replace semantics round-trip through GET), announce — the update
+ * confirmation is the LAST announcement (the reload's "N sources
+ * listed." must not overwrite it); non-2xx → the in-dialog
+ * role="alert" line (the server detail, apiDetail 422-shape-aware) +
+ * the buttons restored, the dialog STAYS open and the textarea
+ * content is KEPT (the instruction survives — tuning-form
+ * convention); network failure → the fixed reachable? line, same
+ * restore. Rows whose list is non-empty show the "N ignored" count
+ * tag next to the location <code> (text + a distinct background —
+ * never color alone, WCAG 1.4.1).
+ *
  * Scope boundary (phase locked decisions): adding a git repo does
  * NOT clone — the sync service (server-side) does that. Removing a
  * source, however, performs the FULL cleanup server-side (phase 69):
@@ -203,6 +232,17 @@ export async function mount(root) {
   const removeError = root.querySelector("#remove-confirm-error");
   const removeCancelBtn = root.querySelector("#remove-confirm-cancel");
   const removeRemoveBtn = root.querySelector("#remove-confirm-remove");
+  /* Phase 89: the per-source ignore-paths editor — the SAME page-local
+     alertdialog idiom as the remove-confirm modal (phase 69): static
+     markup in the shell's Sources view; this module owns the open /
+     cancel / save lifecycle. */
+  const ignoreDialog = root.querySelector("#ignore-editor-dialog");
+  const ignoreBackdrop = root.querySelector(".ignore-editor-backdrop");
+  const ignoreSourceEl = root.querySelector("#ignore-editor-source");
+  const ignoreTextarea = root.querySelector("#ignore-editor-textarea");
+  const ignoreErrorEl = root.querySelector("#ignore-editor-error");
+  const ignoreCancelBtn = root.querySelector("#ignore-editor-cancel");
+  const ignoreSaveBtn = root.querySelector("#ignore-editor-save");
 
   /* Polite live region: the screen-reader confirmation for loads, adds,
      and removals (the phase-15 announcer pattern). */
@@ -321,6 +361,16 @@ export async function mount(root) {
     const code = document.createElement("code");
     code.textContent = value; // rendered as text, never as HTML
     urlTd.append(badge, code);
+    /* Phase 89: the "N ignored" count tag — stored rows with a
+       non-empty list only (text + a distinct background, never color
+       alone — WCAG 1.4.1). The list round-trips: (s.ignore_paths ||
+       []) is the same expression openIgnoreEditor prefills from. */
+    if (s.id && (s.ignore_paths || []).length > 0) {
+      const count = document.createElement("span");
+      count.className = "git-source-ignore-count";
+      count.textContent = `${s.ignore_paths.length} ignored`;
+      urlTd.append(count);
+    }
     tr.appendChild(urlTd);
 
     const addedTd = document.createElement("td");
@@ -330,6 +380,22 @@ export async function mount(root) {
     const actTd = document.createElement("td");
     actTd.className = "git-source-actions-cell";
     if (s.id) {
+      /* Phase 89: the per-row ignore-paths editor trigger (A3: stored
+         rows only — env-fallback rows fall through to the "from
+         .env" tag below). The aria-label is the ONLY place `value`
+         appears (setAttribute — never innerHTML); the text label is
+         static. Sits LEFT of Remove — the non-destructive action
+         first. */
+      const ignoreBtn = document.createElement("button");
+      ignoreBtn.type = "button";
+      ignoreBtn.className = "git-source-ignore";
+      ignoreBtn.setAttribute(
+        "aria-label",
+        `Edit ignored paths for ${kindLabel} source: ${value}`,
+      );
+      ignoreBtn.textContent = "Ignore paths";
+      ignoreBtn.addEventListener("click", () => openIgnoreEditor(s, ignoreBtn));
+      actTd.appendChild(ignoreBtn);
       const btn = document.createElement("button");
       btn.type = "button";
       btn.className = "git-source-remove";
@@ -514,6 +580,168 @@ export async function mount(root) {
   if (removeBackdrop) removeBackdrop.addEventListener("click", cancelRemoveConfirm);
   if (removeRemoveBtn) removeRemoveBtn.addEventListener("click", confirmRemove);
 
+  /* ---------- ignore paths (PATCH /api/git-sources/{id}) — the per-row editor ----------
+   * Phase 89: a stored row's "Ignore paths" button (makeRow — left of
+   * Remove) opens the page-local alertdialog
+   * (#ignore-editor-dialog — the EXACT #remove-confirm-dialog idiom,
+   * phase 69) via openIgnoreEditor(s, triggerBtn): #ignore-editor-
+   * source names the source (textContent ONLY — the same `value`
+   * expression makeRow uses: s.path ?? s.url for local rows, s.url
+   * for git — URLs may embed user:pass@ credentials, phase 32), the
+   * mono textarea PREFILLS the row's stored list (one path per line
+   * — the phase-89 A1 prefix rule, stated in plain words in the
+   * helper copy), the error line clears, and focus lands on Cancel
+   * (the safe default). Escape / Cancel / the dim backdrop close as
+   * CANCEL: no request, focus returns to the row's trigger button.
+   *
+   * "Save" (saveIgnorePaths) runs the §7.4 never-stale lifecycle:
+   * both buttons disable and the save relabels "Saving…" while the
+   * PATCH is out — a blank line in the box is a separator, not an
+   * entry (split + trim + drop empty lines client-side; the server
+   * still rejects empty entries defensively, A4). 200 → close
+   * (focus return) → loadSources (the "N ignored" count tag lands —
+   * the A5 replace round-trips through GET) → announce (the update
+   * confirmation is the LAST announcement — the reload's "N sources
+   * listed." must not overwrite it); non-2xx → the in-dialog
+   * role="alert" line (the server detail, apiDetail 422-shape-aware)
+   * + the buttons restored — the dialog STAYS open and the textarea
+   * content is KEPT (the instruction survives — the tuning-form
+   * convention); network failure → the fixed reachable? line, same
+   * restore. Env-fallback rows (id null) carry NO button (A3 —
+   * nothing is stored to edit). */
+  let ignoreTarget = null; // the row object of the open editor
+  let ignoreTriggerBtn = null; // the row's button — focus returns here on close
+  let ignoreInFlight = false; // §7.4: a PATCH is out (both buttons disabled)
+
+  function openIgnoreEditor(s, triggerBtn) {
+    if (!ignoreDialog || !ignoreTextarea) return; // defensive — the markup ships with the page
+    if (ignoreInFlight) return; // one editor at a time
+    const isLocal = s.kind === "local";
+    // The same `value` expression makeRow uses — textContent ONLY.
+    if (ignoreSourceEl) ignoreSourceEl.textContent = isLocal ? s.path ?? s.url : s.url;
+    ignoreTextarea.value = (s.ignore_paths || []).join("\n");
+    if (ignoreErrorEl) {
+      ignoreErrorEl.textContent = "";
+      ignoreErrorEl.hidden = true; // a new attempt starts clean
+    }
+    ignoreInFlight = false;
+    ignoreTarget = s;
+    ignoreTriggerBtn = triggerBtn; // recorded for the focus return on close
+    ignoreDialog.hidden = false;
+    document.addEventListener("keydown", onIgnoreDialogKeydown);
+    // Cancel is the safe default — focus lands on it (the remove-
+    // dialog precedent; visibly: the global 3px :focus-visible
+    // outline).
+    if (ignoreCancelBtn) ignoreCancelBtn.focus();
+  }
+
+  /* Any close (cancel, success): hide the dialog, reset the textarea
+     + error line, clear the target, detach the keydown handling, and
+     return focus to the row's "Ignore paths" button (WCAG 2.1). */
+  function closeIgnoreEditor() {
+    if (!ignoreDialog) return;
+    ignoreDialog.hidden = true;
+    ignoreInFlight = false;
+    if (ignoreTextarea) ignoreTextarea.value = "";
+    if (ignoreErrorEl) {
+      ignoreErrorEl.textContent = "";
+      ignoreErrorEl.hidden = true;
+    }
+    if (ignoreCancelBtn) ignoreCancelBtn.disabled = false;
+    if (ignoreSaveBtn) {
+      ignoreSaveBtn.disabled = false;
+      ignoreSaveBtn.textContent = "Save";
+    }
+    document.removeEventListener("keydown", onIgnoreDialogKeydown);
+    const trigger = ignoreTriggerBtn;
+    ignoreTarget = null;
+    ignoreTriggerBtn = null;
+    if (trigger) trigger.focus(); // focus returns to the row's button
+  }
+
+  /* Escape / Cancel / backdrop all close as cancel — NO request. A
+     cancel is a no-op while a PATCH is in flight (no half-cancel of
+     an in-progress save; the buttons are disabled anyway, the
+     Escape/backdrop paths need this guard). */
+  function cancelIgnoreEditor() {
+    if (ignoreInFlight) return;
+    closeIgnoreEditor();
+  }
+
+  /* While open (attached in openIgnoreEditor, detached in
+     closeIgnoreEditor): Escape closes as cancel. */
+  function onIgnoreDialogKeydown(e) {
+    if (e.key === "Escape") {
+      e.preventDefault();
+      cancelIgnoreEditor();
+    }
+  }
+
+  async function saveIgnorePaths() {
+    if (!ignoreTarget || ignoreInFlight) return; // one request at a time
+    // The box's lines: one path per line — a blank line is a
+    // separator, not an entry (trim + drop empty; the server still
+    // rejects empties defensively, A4).
+    const lines = ignoreTextarea.value.split("\n").map((l) => l.trim()).filter(Boolean);
+    const t = ignoreTarget;
+    const value = t.kind === "local" ? (t.path ?? t.url) : t.url;
+    ignoreInFlight = true;
+    if (ignoreErrorEl) {
+      ignoreErrorEl.textContent = "";
+      ignoreErrorEl.hidden = true;
+    }
+    if (ignoreCancelBtn) ignoreCancelBtn.disabled = true;
+    if (ignoreSaveBtn) {
+      ignoreSaveBtn.disabled = true;
+      ignoreSaveBtn.textContent = "Saving…"; // §7.4 in-flight label
+    }
+    try {
+      const r = await fetch(`/api/git-sources/${encodeURIComponent(t.id)}`, {
+        method: "PATCH",
+        headers: { "Content-Type": "application/json" },
+        body: JSON.stringify({ ignore_paths: lines }),
+      });
+      if (r.ok) {
+        // 200: the server replaced the row's list (A5).
+        closeIgnoreEditor(); // focus returns to the row's button
+        await loadSources(); // the "N ignored" count tag lands
+        // The update confirmation is the LAST announcement: the
+        // reload's "N sources listed." must not overwrite it (the
+        // same order as the remove flow).
+        announce(`Ignored paths updated for ${value}`);
+        return;
+      }
+      // non-2xx: the in-dialog role="alert" line (the server detail)
+      // — the dialog STAYS open and the textarea content is KEPT:
+      // the fix is one edit + retry, not a re-type.
+      if (ignoreErrorEl) {
+        ignoreErrorEl.textContent = await apiDetail(r, "Could not save the ignored paths — try again.");
+        ignoreErrorEl.hidden = false;
+      }
+    } catch {
+      if (ignoreErrorEl) {
+        ignoreErrorEl.textContent = "Could not save the ignored paths — is the app reachable?";
+        ignoreErrorEl.hidden = false;
+      }
+    } finally {
+      // Never stale (PLAN §7.4): the failure paths re-enable BOTH
+      // buttons + relabel the save; the success path already closed
+      // the dialog (which resets them) — the restore is a no-op
+      // there.
+      ignoreInFlight = false;
+      if (ignoreCancelBtn) ignoreCancelBtn.disabled = false;
+      if (ignoreSaveBtn) {
+        ignoreSaveBtn.disabled = false;
+        ignoreSaveBtn.textContent = "Save";
+      }
+    }
+  }
+
+  /* The dialog's own buttons (static markup — wired once). */
+  if (ignoreCancelBtn) ignoreCancelBtn.addEventListener("click", cancelIgnoreEditor);
+  if (ignoreBackdrop) ignoreBackdrop.addEventListener("click", cancelIgnoreEditor);
+  if (ignoreSaveBtn) ignoreSaveBtn.addEventListener("click", saveIgnorePaths);
+
   /* ---------- add (POST /api/git-sources) — the git form ----------
    * wireAddForm gives the form the §7.4 never-stale lifecycle: while
    * the request is out the button disables + relabels "Adding…" and

frontend/assets/styles.css

@@ -2183,6 +2183,173 @@ details.thinking .thinking-text ul { margin: 0 0 0.5rem; }
   color: var(--bg);
 }
 
+/* ---------- Per-source ignore-paths editor (phase 89, task 05) ----------
+   The shell's Sources view: the page-local alertdialog that edits
+   one source's ignore list (one path per line — the phase-89 A1
+   prefix rule, stated in plain words in the helper copy). The EXACT
+   #remove-confirm-dialog overlay contract (phase 69): a fixed
+   full-viewport dim backdrop + a centered panel (z-index 1000, above
+   the sticky header (20) + skip-link (100); NO blur — the phase-08
+   no-blur perf anchor), scaled to the 46rem chat-column width or the
+   viewport, whichever is narrower. The box: a VISIBLE block label
+   (WCAG — never aria-label-only) over a mono textarea (the box is a
+   data entry, not prose — the var(--mono) stack); the error line is
+   the err pair (err-ink on err-bg 9.3:1, the err-line border);
+   Cancel is the ghost ink-soft family (5.1:1 on --surface); Save is
+   the solid brand family (--bg text on --brand 5.2:1 — the
+   .new-chat-btn convention; the hover lightens the fill). Both
+   buttons >=44px; :focus-visible via the global 3px outline rule (no
+   local suppression — focus lands on Cancel at open and is visible);
+   no animation (reduced-motion safe by construction). AA pairs: title
+   / copy / label are --ink (or ink-soft) on --surface (13.8:1 /
+   5.1:1); the source value is --ink on --bg (16.7:1). Phase-08
+   tokens only; system fonts; no CDN. */
+.ignore-editor {
+  position: fixed;
+  inset: 0;
+  z-index: 1000;
+  display: flex; /* the panel is the only in-flow child — margin: auto centers it */
+}
+/* Explicit (the global [hidden] rule already wins — the documented,
+   testable contract for the skeleton). */
+.ignore-editor[hidden] { display: none; }
+
+.ignore-editor-backdrop {
+  position: fixed;
+  inset: 0;
+  /* --bg at 82% — the doc-modal dim, no backdrop-filter (no-blur). */
+  background: rgba(15, 10, 10, 0.82);
+}
+
+.ignore-editor-panel {
+  /* position:relative lifts the panel above the fixed backdrop
+     (positioned elements paint over in-flow siblings otherwise). */
+  position: relative;
+  z-index: 1;
+  margin: auto;
+  width: min(46rem, calc(100vw - 2rem));
+  padding: 1.5rem;
+  background: var(--surface);
+  border: 1px solid var(--line);
+  border-radius: var(--radius);
+  box-shadow: var(--shadow-lg);
+}
+
+.ignore-editor-title {
+  margin: 0 0 0.75rem;
+  font-size: 1.25rem;
+  line-height: 1.3;
+  color: var(--ink);
+}
+
+/* The source's value (git URL or local path) — mono, wrapped (a long
+   URL must not overflow the panel), --ink on --bg (16.7:1). */
+.ignore-editor-source {
+  display: block;
+  margin: 0 0 0.75rem;
+  padding: 0.5rem 0.65rem;
+  font-family: var(--mono);
+  font-size: 0.85rem;
+  line-height: 1.5;
+  color: var(--ink);
+  background: var(--bg);
+  border: 1px solid var(--line);
+  border-radius: var(--radius-sm);
+  overflow-wrap: anywhere;
+}
+
+.ignore-editor-copy {
+  margin: 0 0 1rem;
+  color: var(--ink); /* 13.8:1 on --surface */
+}
+.ignore-editor-copy code { font-family: var(--mono); font-size: 0.85em; }
+
+/* Visible block label (WCAG — the textarea is NEVER labelled only via
+   aria-label); ink-soft on --surface (5.1:1). */
+.ignore-editor-label {
+  display: block;
+  margin-bottom: 0.35rem;
+  color: var(--ink-soft);
+  font-size: 0.88rem;
+  font-weight: 600;
+}
+
+/* The box: full panel width, mono (the var(--mono) stack), theme-
+   consistent border on --bg; the focus-visible ring is the global
+   3px outline (no local suppression); vertical resize for long
+   lists (up to 200 entries, A4). */
+.ignore-editor-textarea {
+  display: block;
+  width: 100%;
+  min-height: 9rem;
+  padding: 0.55rem 0.65rem;
+  font-family: var(--mono);
+  font-size: 0.85rem;
+  line-height: 1.5;
+  color: var(--ink);
+  background: var(--bg);
+  border: 1px solid var(--line);
+  border-radius: var(--radius-sm);
+  resize: vertical;
+}
+
+/* The in-dialog failure line (role=alert): the err pair (err-ink on
+   err-bg 9.3:1, the err-line border) — the .remove-confirm-error
+   language. */
+.ignore-editor-error {
+  margin: 0.75rem 0 0;
+  padding: 0.5rem 0.65rem;
+  color: var(--err-ink);
+  background: var(--err-bg);
+  border: 1px solid var(--err-line);
+  border-radius: var(--radius-sm);
+}
+
+.ignore-editor-actions {
+  display: flex;
+  justify-content: flex-end;
+  gap: 0.6rem;
+  margin-top: 1.1rem;
+}
+
+/* The two dialog buttons: >=44px targets, the house 3px :focus-visible
+   via the global outline rule (no local override). */
+.ignore-editor-btn {
+  min-height: 44px;
+  min-width: 44px;
+  padding: 0.55rem 1.1rem;
+  border-radius: var(--radius-sm);
+  font: inherit;
+  font-weight: 600;
+  font-size: 0.9rem;
+  white-space: nowrap;
+  cursor: pointer;
+}
+.ignore-editor-btn:disabled { opacity: 0.5; cursor: wait; }
+
+/* Cancel — the ghost ink-soft family (5.1:1 on --surface), like the
+   remove dialog's Cancel; the brand pair on hover (12.4:1 on
+   brand-soft). */
+.ignore-editor-cancel {
+  border: 1px solid var(--line);
+  background: transparent;
+  color: var(--ink-soft);
+}
+.ignore-editor-cancel:hover:not(:disabled) {
+  background: var(--brand-soft);
+  color: var(--brand-ink);
+}
+
+/* "Save" — the solid brand family (the .new-chat-btn convention):
+   --bg text on --brand (5.2:1 — AA); the hover lightens the brand
+   fill (the .new-chat-btn hover pair). */
+.ignore-editor-save {
+  border: 0;
+  background: var(--brand);
+  color: var(--bg);
+}
+.ignore-editor-save:hover:not(:disabled) { background: #f55a72; }
+
 /* The list: the Sources page's table pattern — full width in the
    72rem frame, surface card, horizontally scrollable wrapper (the
    URL column never wraps or ellipsizes: long URLs, credentials
@@ -2266,6 +2433,54 @@ details.thinking .thinking-text ul { margin: 0 0 0.5rem; }
 .git-source-remove:hover:not(:disabled) { background: var(--err-bg); color: var(--err-ink); border-color: var(--err-line); }
 .git-source-remove:disabled { opacity: 0.5; cursor: wait; }
 
+/* Phase 89: the per-row "Ignore paths" trigger (makeRow — left of
+   Remove): the .git-source-remove idiom (same size/spacing, >=44px
+   target) in a NEUTRAL secondary fill — it must read distinct from
+   the destructive Remove (text label included, never icon-only; the
+   hover takes the brand-soft pair, 12.4:1 — Remove hovers to the err
+   pair, 9.3:1). */
+.git-source-ignore {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  min-height: 44px;
+  min-width: 44px;
+  flex: 0 0 auto;
+  padding: 0.35rem 0.7rem;
+  margin-right: 0.4rem;
+  border: 1px solid var(--line);
+  border-radius: var(--radius-sm);
+  background: transparent;
+  color: var(--ink-soft);
+  font: inherit;
+  font-weight: 600;
+  font-size: 0.82rem;
+  white-space: nowrap;
+  cursor: pointer;
+}
+.git-source-ignore:hover:not(:disabled) {
+  background: var(--brand-soft);
+  color: var(--brand-ink);
+}
+
+/* Phase 89: the "N ignored" count tag — next to the location <code>
+   in the Source cell (TEXT + a distinct background, never color
+   alone — WCAG 1.4.1): --ink on --bg (16.7:1) inside the --surface
+   card; the line border keeps the chip legible when the row hover
+   swaps the cell onto --bg too. */
+.git-source-ignore-count {
+  display: inline-block;
+  margin-left: 0.55rem;
+  padding: 0.08rem 0.5rem;
+  border: 1px solid var(--line);
+  border-radius: 999px;
+  font-size: 0.72rem;
+  font-weight: 600;
+  color: var(--ink);
+  background: var(--bg);
+  white-space: nowrap;
+}
+
 /* Env-fallback rows carry no Remove (nothing is stored to remove) —
    the tag says where the row comes from (brand pair, 6.9:1). */
 .git-source-env-tag {

frontend/index.html

@@ -647,6 +647,44 @@
               </div>
             </div>
           </div>
+
+          <!-- Phase 89: the per-source ignore-paths editor — the EXACT
+               #remove-confirm-dialog pattern (phase 69): page-local
+               alertdialog, dim backdrop, focus on Cancel (the safe
+               default), Escape/backdrop close as CANCEL, focus returns
+               to the row's trigger button. The box itself: one path
+               per line (prefix semantics — the phase-89 A1 rule,
+               stated in plain words in the helper line); Save runs the
+               §7.4 never-stale lifecycle (git-sources.js: "Saving…"
+               while the PATCH is out). Stored rows only (A3) — the
+               per-row button lives in git-sources.js's makeRow; this
+               is the page-local dialog it opens. -->
+          <div class="ignore-editor" id="ignore-editor-dialog" role="alertdialog"
+               aria-modal="true" aria-labelledby="ignore-editor-title"
+               aria-describedby="ignore-editor-copy" hidden>
+            <div class="ignore-editor-backdrop" aria-hidden="true"></div>
+            <div class="ignore-editor-panel">
+              <h2 class="ignore-editor-title" id="ignore-editor-title">Ignored files and folders</h2>
+              <code class="ignore-editor-source" id="ignore-editor-source"></code>
+              <p class="ignore-editor-copy" id="ignore-editor-copy">
+                One path per line. A file is ignored when its path in the
+                source starts with any of these — <code>/my/files/</code>,
+                <code>my/files/</code> and <code>my/files</code> mean the same
+                thing. No wildcards, no matching in the middle of a path.
+              </p>
+              <label class="ignore-editor-label" for="ignore-editor-textarea">Ignored paths</label>
+              <textarea class="ignore-editor-textarea" id="ignore-editor-textarea"
+                        rows="6" spellcheck="false"
+                        placeholder="my/files/"></textarea>
+              <p class="ignore-editor-error" id="ignore-editor-error" role="alert" hidden></p>
+              <div class="ignore-editor-actions">
+                <button type="button" class="ignore-editor-btn ignore-editor-cancel"
+                        id="ignore-editor-cancel">Cancel</button>
+                <button type="button" class="ignore-editor-btn ignore-editor-save"
+                        id="ignore-editor-save">Save</button>
+              </div>
+            </div>
+          </div>
         </div>
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