feat(theme-selector): bespoke previews for lsp-mode, git-gutter, flycheck, dired, dirvish

Five more apps leave the generic face-name list for full bespoke previews: lsp-mode (signature, inlay hints, read/write/textual highlights, rename, install) covering all 14 faces; git-gutter all 5 (its face names carry colons, which survive the data-face attribute and flash selectors); flycheck all 20 (a diagnostic line plus an error-list buffer); dired all 12 (built-in, so curated from the daemon rather than the inventory); dirvish all 38 (attribute columns, vc states, media info, proc, narrow). Every face renders a clickable preview element, verified by a headless DOM dump per app.

1 files changed, 11 insertions, 8 deletions

diff --git a/scripts/theme-selector/README.md b/scripts/theme-selector/README.md
index afeb751f..e3c773dd 100644
--- a/scripts/theme-selector/README.md
+++ b/scripts/theme-selector/README.md
@@ -64,14 +64,17 @@ foreground and background dropdown, bold/italic toggles, an `inherit` dropdown
 height stepper, a contrast readout, and a per-face reset. There's a per-app
 reset and a text filter for the large sets.
 
-Six applications have bespoke previews that exercise nearly all of their faces:
-org-mode (a document plus an agenda view), magit (a status buffer plus blame,
-reflog, sequence, bisect, and signature rows), elfeed (a search list and log),
-ghostel (a mock terminal with the 16 ANSI colors), mu4e (a headers list, message
-view, and compose stub), and dashboard. Every other installed package is reachable
-too, with an editable table and a generic preview (each face name in its own
-colors), so any package can be themed. Clicking a face row flashes that face in
-the preview, and clicking a preview element flashes its row.
+Eleven applications have bespoke previews that exercise nearly all of their
+faces: org-mode (a document plus an agenda view), magit (a status buffer plus
+blame, reflog, sequence, bisect, and signature rows), elfeed (a search list and
+log), ghostel (a mock terminal with the 16 ANSI colors), mu4e (a headers list,
+message view, and compose stub), dashboard, lsp-mode (signatures, inlay hints,
+symbol highlights, rename), git-gutter, flycheck (a diagnostic line plus an
+error-list buffer), dired, and dirvish (attribute columns, vc states, media,
+proc, narrow). Every other installed package is reachable too, with an editable
+table and a generic preview (each face name in its own colors), so any package
+can be themed. Clicking a face row flashes that face in the preview, and clicking
+a preview element flashes its row.
 
 **Inheritance** is modeled, not flattened: a face's effective color is resolved
 through its `inherit` chain and shown in the table and preview; setting an