fix(web): retire the stale homelab-era copy — neutral, accurate defaults on every page

Fixed: index.html meta description, empty-state sub and composer
placeholder (A1); app/config.py default suggestion chips → the four
neutral A2 defaults (BOR_SUGGESTIONS override unchanged); sources.html
KB page-sub → the current source model (git repos + local dirs +
uploaded archives, Sync pulls/imports); git-sources.html example URL
→ your-repo.git (A3); all 9 footers → neutral default in
span.footer-text (the phase-62 hook); E2E/unit conftests force the
code defaults so a local .env cannot leak corpus copy into tests;
new unit text pins + dedicated E2E suite.

Task 02 verification read-through — no change needed:
- sources.html sync result/error copy (matches the real sync behavior)
- tuning.html page-sub (accurate as written)
- history.html page-sub (accurate as written)
- doc-edit.html page-sub (accurate as written)
- git-sources.html page-sub (accurate as written)
- #sources-gate anonymous copy (accurate as written)

tests/e2e/test_stale_ui_copy.py

@@ -0,0 +1,117 @@
+"""Phase 61 E2E (Playwright): the retired homelab-era copy is gone — the
+visitor SEES the locked neutral copy on the shared default server.
+
+Story: n/a (TODO-derived — TODO.md L4 "Clean up the UI, there's text
+that references old features…"). Run in isolation (DB must be up:
+``podman compose up -d db``):
+
+    uv run pytest tests/e2e/test_stale_ui_copy.py -v --no-cov
+
+The shared conftest server boots with the default env — and the code
+defaults are exactly this phase's locked copy (A1/A2; the conftest
+forces ``BOR_SUGGESTIONS`` from the ``Settings`` field so an operator's
+local ``.env`` cannot leak corpus-specific chips). Every assertion is a
+settled-state check: static HTML + one ``GET /api/suggestions`` fetch;
+Playwright's ``expect`` retries ride out the chip rendering.
+
+Test → lock mapping (Playwright Mapping Rule):
+1. ``test_chat_page_placeholder_meta_footer_are_the_locked_copy``
+2. ``test_chat_page_shows_no_homelab_or_deployment_text``
+3. ``test_chat_page_suggestion_chips_are_the_locked_list``
+4. ``test_sources_page_sub_describes_the_current_source_model``
+5. ``test_git_sources_example_url_is_neutral``
+"""
+from __future__ import annotations
+
+from playwright.sync_api import Page, expect
+
+# The locked replacement copy (owner-locked A1 / A2 / A3 — same literals
+# as tests/unit/test_stale_ui_copy.py; the unit pins guard the files,
+# this suite guards what the visitor actually sees).
+META = "Ask anything about your indexed documents — every answer cites the exact doc."
+PLACEHOLDER = "Ask me anything…"
+FOOTER = "Powered by self-hosted models"
+GIT_EXAMPLE = "https://github.com/you/your-repo.git"
+
+CHIPS = [
+    "What documents are in the knowledge base?",
+    "Which source does each answer come from?",
+    "How do I add a new source?",
+    "Summarize the most recent document.",
+]
+
+
+def test_chat_page_placeholder_meta_footer_are_the_locked_copy(
+    page: Page, app_url: str, db_ready: None
+) -> None:
+    """The composer placeholder, the <meta description> content and the
+    footer span all read the locked (A1) copy — read from the DOM a
+    visitor gets."""
+    page.goto(f"{app_url}/")
+    expect(page.locator("#message-input")).to_have_attribute(
+        "placeholder", PLACEHOLDER
+    )
+    meta = page.eval_on_selector('meta[name="description"]', "el => el.content")
+    assert meta == META, "the rendered meta description must be the locked copy"
+    expect(page.locator(".footer-text").first).to_have_text(FOOTER)
+
+
+def test_chat_page_shows_no_homelab_or_deployment_text(
+    page: Page, app_url: str, db_ready: None
+) -> None:
+    """The entire rendered chat page (nav, empty state, composer, footer)
+    shows no homelab-era text — the empty-state sub AND the four
+    rendered suggestion chips are covered by this body scan (case-
+    insensitive; a fresh page context has no saved chats, so the empty
+    state is what renders)."""
+    page.goto(f"{app_url}/")
+    expect(page.locator("#suggestions .suggestion-chip")).to_have_count(len(CHIPS))
+    body = page.evaluate("() => document.body.innerText.toLowerCase()")
+    assert "homelab" not in body, f"homelab-era text rendered on the chat page: {body!r}"
+    assert "deployment" not in body, (
+        f"homelab-era text rendered on the chat page: {body!r}"
+    )
+
+
+def test_chat_page_suggestion_chips_are_the_locked_list(
+    page: Page, app_url: str, db_ready: None
+) -> None:
+    """The four rendered empty-state chips (from ``GET
+    /api/suggestions``, the code default) are the locked (A2) list, in
+    order."""
+    page.goto(f"{app_url}/")
+    chips = page.locator("#suggestions .suggestion-chip")
+    expect(chips).to_have_count(len(CHIPS))
+    for i, chip in enumerate(CHIPS):
+        expect(chips.nth(i)).to_have_text(chip)
+
+
+def test_sources_page_sub_describes_the_current_source_model(
+    page: Page, app_url: str, db_ready: None
+) -> None:
+    """The KB page-sub (the string the TODO cited by name) no longer
+    names ~/Homelab or ~/Deployments and describes the current source
+    model. The page is anonymously viewable — the catalog gate hides
+    the table, not the page-head."""
+    page.goto(f"{app_url}/sources.html")
+    sub = page.locator(".page-sub").first
+    expect(sub).to_be_visible()
+    text = sub.inner_text().lower()
+    assert "homelab" not in text, f"retired copy in the page-sub: {text!r}"
+    assert "deployments" not in text, f"retired copy in the page-sub: {text!r}"
+    assert "configured sources" in text, (
+        f"the page-sub must name the current source model: {text!r}"
+    )
+
+
+def test_git_sources_example_url_is_neutral(
+    page: Page, app_url: str, db_ready: None
+) -> None:
+    """The repo-URL form example (A3) is the neutral your-repo.git —
+    read from the DOM; the element exists even while
+    ``#git-sources-content`` is hidden for an anonymous visitor (no
+    sign-in needed)."""
+    page.goto(f"{app_url}/git-sources.html")
+    expect(page.locator("#git-source-url")).to_have_attribute(
+        "placeholder", GIT_EXAMPLE
+    )