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>

agent/BACKLOG.md

@@ -234,9 +234,6 @@ them as composable commands, not dead ends.
 - **Night-light geo mode**: lat/long auto sunset/sunrise (means wlsunset).
 - **Per-theme icon overrides** / more icon packs (ROADMAP § Icon themes).
 - **MIPI/IPU software-ISP camera** support (no-UVC machines).
-- **OCR screenshot-to-text**: a Capture › entry (grim region → tesseract
-  → clipboard) — recording (#12, shipped 2026-07-04) already reshaped
-  the submenu, so this is now a two-row addition.
 - **Doctor Waybar warning**: a self-gating bar indicator fed by
   `nomarchy-doctor` (shipped 2026-07-04) — appears only when the sheet
   has a ✖; click opens the sheet.