feat(capture): OCR region to clipboard (LATER item)

Tools › Capture gains "OCR region → clipboard", self-gated on
tesseract: slurp the region (Esc cancels silently, the recording.nix
pattern), grim it, tesseract stdin→stdout, wl-copy. Whitespace-only
recognition toasts "No text recognized" instead of clobbering the
clipboard; success toasts the word count. tesseract ships English-only
through the menu's package set — the unscoped wrapper pulls every
language's traineddata, a real cost on a compile-from-source distro;
overriding with more languages is documented at the package line.

Verified: V0; V1 — template-home builds with the gated row + case and
menu bash -n; functional — the profile's own tesseract read a rendered
test image back verbatim, proving the OCR half of the pipe. The
grim/slurp half needs a session → HARDWARE-QUEUE.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

modules/home/rofi.nix

@@ -370,6 +370,7 @@ ${themeRows}
           row "Region → file"           applets-screenshooter
           row "Full screen → clipboard" camera-photo
           row "Full screen → file"      camera-photo
+          command -v tesseract >/dev/null 2>&1 && row "OCR region → clipboard" scanner
           if command -v nomarchy-record >/dev/null 2>&1; then
             if nomarchy-record active; then
               row "■ Stop recording" media-playback-stop
@@ -389,6 +390,16 @@ ${themeRows}
           *"Region → clipboard"*)      grim -g "$(slurp)" - | wl-copy ;;
           *"Region → file"*)           mkdir -p "$dir"; grim -g "$(slurp)" "$file" \
                                          && notify-send "Screenshot saved" "$file" ;;
+          *"OCR region"*)
+            # Select → screenshot → tesseract → clipboard. Esc in slurp
+            # cancels silently (the recording.nix pattern); recognizing
+            # nothing toasts instead of copying an empty clipboard.
+            geo=$(slurp) || exit 0
+            txt=$(grim -g "$geo" - | tesseract stdin stdout 2>/dev/null)
+            [ -n "''${txt//[[:space:]]/}" ] \
+              || { notify-send "OCR" "No text recognized in that region."; exit 0; }
+            printf '%s' "$txt" | wl-copy
+            notify-send "OCR" "Copied $(printf '%s' "$txt" | wc -w) word(s) to the clipboard." ;;
           *"Full screen → clipboard"*) grim - | wl-copy ;;
           *"Full screen → file"*)      mkdir -p "$dir"; grim "$file" \
                                          && notify-send "Screenshot saved" "$file" ;;
@@ -796,6 +807,10 @@ in
       pkgs.nodejs                # npx, for the Ask Claude module (claude-code from npm)
       pkgs.networkmanager_dmenu  # network module: rofi wifi/VPN picker
       pkgs.rofi-pulse-select     # audio module: sink/source switcher
+      # Capture › OCR region: English only — the unscoped wrapper drags
+      # in every language's traineddata, a real cost on a compile-from-
+      # source distro. More languages: override in your home.nix.
+      (pkgs.tesseract.override { enableLanguages = [ "eng" ]; })
     ];
 
     # networkmanager_dmenu drives rofi (not bare dmenu) and uses rofi's