feat(face-diagnostic): Phase 4 render, command, and init wiring

Phase 4 completes the face/font diagnostic. cj/describe-face-at-point renders cj/--face-diagnosis-at into a read-only *Face Diagnosis* buffer (cj/face-diagnostic-mode), with a region-scan mode over distinct face-runs (capped at 20) and an out-of-scope banner. It is required in init.el. The render is split into small section formatters tested on captured plists, and the command is smoke-tested and live-verified in the daemon, where it already surfaces the active auto-dim remaps. The command name is settled as cj/describe-face-at-point. The keybinding stays Craig's pick, and face-name buttons plus the module-header allowlist entry are filed as a follow-up. The spec is marked implemented and renamed to its lifecycle filename. 35 ERT tests, byte-compile clean.

1 files changed, 2 insertions, 2 deletions

diff --git a/docs/specs/face-font-diagnostic-popup-spec.org b/docs/specs/face-font-diagnostic-popup-spec-implemented.org
index e5ad4380e..3e8fadcd8 100644
--- a/docs/specs/face-font-diagnostic-popup-spec.org
+++ b/docs/specs/face-font-diagnostic-popup-spec-implemented.org
@@ -1,6 +1,6 @@
 :PROPERTIES:
 :ID:       98f065cf-8bd5-46a0-ac24-da94d66855ad
-:STATUS:   not-started
+:STATUS:   implemented
 :END:
 #+TITLE: Face and Font Diagnostic Popup — Spec
 #+AUTHOR: Craig Jennings
@@ -9,7 +9,7 @@
 
 * Metadata
 
-| Status   | not-started                                             |
+| Status   | implemented                                             |
 |----------+---------------------------------------------------|
 | Owner    | Craig Jennings                                    |
 |----------+---------------------------------------------------|