Add custom fonts: upload WOFF2/WOFF/TTF/OTF files and pick them on the Design tab

Fonts become a file kind of their own (sniffed from the bytes like images,
served inline from /media), and the theme gets custom_font and
custom_heading_font: a chosen file is declared as @font-face and put first
in the stack, the built-in Font / Heading font choice behind it as the
fallback, so there is no "custom" enum value and no invalid state. The
pickers are plain selects with an upload input, no script. Fonts uploaded
before this are reclassified by the migration.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Sd8UPWrvyYCLj97JexNw3A

1 files changed, 3 insertions, 3 deletions

diff --git a/internal/web/handlers_posts.go b/internal/web/handlers_posts.go
index ec56138..ac0dd90 100644
--- a/internal/web/handlers_posts.go
+++ b/internal/web/handlers_posts.go
@@ -114,7 +114,7 @@ func (s *Server) handlePostSave(w http.ResponseWriter, r *http.Request) {
 	p.Format = pick(r.FormValue("format"), store.FormatMarkdown, store.FormatHTML)
 	p.Published = r.FormValue("published") == "on"
 	p.PageID, _ = strconv.ParseInt(r.FormValue("page_id"), 10, 64)
-	p.Image = imageID(pickImage(p.Image, r.FormValue("image")))
+	p.Image = fileID(pickFile(p.Image, r.FormValue("image")))
 	tags, tagsOK := parseTags(strings.Split(r.FormValue("tags"), ","))
 	p.Tags = tags
 	autoSlug := p.Slug == ""
@@ -138,13 +138,13 @@ func (s *Server) handlePostSave(w http.ResponseWriter, r *http.Request) {
 			return
 		}
 	}
-	img, err := s.readUpload(r, "body_file", false)
+	img, err := s.readUpload(r, "body_file", "")
 	if err != nil {
 		fail(http.StatusBadRequest, s.tr(r, "File not added:")+" "+err.Error())
 		return
 	}
 	p.BodyMD = appendFile(p.BodyMD, img, p.Format)
-	if f, err := s.readUpload(r, "image_file", true); err != nil { // an upload beats the picker
+	if f, err := s.readUpload(r, "image_file", "image"); err != nil { // an upload beats the picker
 		fail(http.StatusBadRequest, s.tr(r, "Image not added:")+" "+err.Error())
 		return
 	} else if f != nil {