README: page text editing

README.md

@@ -65,6 +65,13 @@ never changes the page for anyone else. **Reset look** in the header, or saying
 - The CSS uses cascade layers in the order `base < user < protected`. The TEST DEMO banner, the agent badge, and the checkout, cash and receipt panels (fee lines, totals, the test-card notice and the card inputs) live in `protected`. No theme can hide, recolour or shrink them.
 - Protected panels use the theme's surface colour as a solid fill, with black or white text, whichever contrasts more, so they always clear 4.5:1. The banner and badge use fixed high-contrast colours.
 - Text sitting directly on the page background switches to readable ink. If no ink clears 4.5:1 against every gradient stop, it gets a scrim behind it.
+- **Page text.** The logo (top-left brand text), headline, subtitle, footer, quick-action buttons and bullets are editable
+  through `copy`. The built-in agent (`market/copyedit.py`) understands "replace/change/rename/swap A to/with/into B",
+  locations such as top left, header, logo, brand, site name, title, headline, subtitle and footer, quoted or unquoted text,
+  and a generic find-and-replace when A is the current text of exactly one slot. It keeps the case you type for B; text typed
+  all in lowercase takes the style of the text it replaces ("new internet" replacing "Agent Market" gives "New Internet").
+  When it can't tell what to change, it says what it understood and offers the closest option. The model prompt gets the
+  same slot map plus the visitor's current page text (`PAGE_TEXT`).
 - If the model is unavailable, the built-in agent understands the common look commands: presets, light/dark, background colours, gradients and patterns, accent and text colour, fonts, bigger or smaller text, corners, density, card style, list/grid, columns, chat position and size, hiding or showing sections, headline, logo and subtitle, animations, and reset.
 
 ### Fees
@@ -203,6 +210,7 @@ python3 tests/e2e_http.py http://127.0.0.1:8795           # HTTP end-to-end incl
 bash tests/llm_proxy_check.sh                             # fake LLM: 429 chain, cooldown, fallback, key handling, rate limit
 python3 tests/nl_check.py http://127.0.0.1:8795           # real model: 6 natural-language prompts
 python3 tests/test_theme.py                               # theme spec + customCss sanitiser
+python3 tests/test_copyedit.py                            # built-in copy edits (logo/headline/... phrasings)
 NODE_PATH=... node tests/theme_check.js BASE ./screenshots   # chat restyles, guardrail contrast, persistence, hostile stored theme, reset (REQUIRE_LLM=1 to insist on the model)
 NODE_PATH=/path/to/node_modules node tests/browser_e2e.js http://127.0.0.1:8795 ./screenshots  # headless Chrome (14 checks)
 NODE_PATH=/path/to/node_modules bash tests/fake_model_browser.sh   # React UI vs fake model: badges, fallback text, quota, rate-limit toast, sanitised set_theme