docs: fix round-3 review findings — §/used-to/v1 residuals, zh stamp example, budget freeze honored

Delete the three §-citation residuals (web-app cordis.patch.yml, two
client design.md §-headers); recast the two CSS used-to narrations and
hmr's four v1 labels as current-state prose; narrow the zh exemption
example to 'this cut' (「本版本」 legitimately renders 'This version');
extend the candidate gate list with the post-battery shapes (§\d with a
committed-owner carve-out, 'used to', bare v1) on both sides and
re-record; honor the over-target ceiling freeze — docs/AGENTS.md
condensed to 1320 and the ceiling restored to 1320.

packages/client/ui-models/src/client/ModelsSection.module.css

@@ -3,10 +3,10 @@
  * 32px fields, and `border-l2` hairlines — the vocabulary GeneralSection and
  * the Button/Input primitives already use.
  *
- * Every color resolves through a `--dsw-alias-*` token. The section used to
- * name `--border` / `--surface` / `--text-*`, which nothing in this app
- * defines, so it always rendered the light-mode literals written as their
- * fallbacks and stayed light under the dark theme. */
+ * Every color resolves through a `--dsw-alias-*` token. Bare `--border` /
+ * `--surface` / `--text-*` names, which nothing in this app defines, would
+ * render the light-mode literals written as their fallbacks and stay light
+ * under the dark theme. */
 
 .section {
   display: flex;