fix(theme-studio): apply the package-face audit — dead faces, structural defaults, boxes

Acting on the per-package face audit (every package's faces checked against the live daemon and source):

Removed 11 nonexistent mu4e faces — mu4e-cited-1-face through -7-face, mu4e-attach-number-face, mu4e-compose-header-face, mu4e-moved-face. Newer mu4e dropped these (citations now inherit message-cited-text-N), so they themed nothing and showed phantom samples in the preview. Confirmed absent in the installed mu4e source before removing.

Boxed the faces that actually use :box, now that the attribute exists: magit-branch-current and magit-branch-remote-head (flat line box, matching :box t), and the released-button buttons — two flycheck list faces, the telega box-button family, and the slack button/dialog/reaction faces.

Restored the structural defaults the seeds had dropped relative to each package's own defface: underline on org-link/-cite/-cite-key, lsp-face-highlight-read/-rename, flycheck-error/-warning/-info, mu4e-header-highlight-face, calibredb-search-header-highlight-face, telega-describe-section-title, slack-message-output-header/-channel-button; bold on org-special-keyword, lsp-face-highlight-write, all four git-gutter faces, flycheck-error-list-highlight, the erc nick cluster (nick-default, button-nick-default, nick-prefix, my-nick-prefix, nick-msg, notice, pal, button), org-noter's two faces, and three slack label faces; italic on dirvish-media-info-property-key; height on lsp-details-face (0.8), shr-sup (0.8), calibredb-current-page-button (1.1).

Left the taste-call contradictions for review (shr-h3/h4-6, telega-msg-user-title, erc-action-face) — these are theme-design choices, not clear defects. dashboard, dired, org-drill, elfeed, signel, and pearl were clean.

0 files changed, 0 insertions, 0 deletions