docs(load-graph): classify core libraries and command modules

Third classification batch: the remaining core and library command modules from init.el's early block — external-open, media-utils, auth-config, keyboard-macros, system-utils, text-config, undead-buffers. I annotated each with the load-graph header contract, added a Batch 3 table to the inventory, and extended the validation allowlist. 23 of 102 modules are now classified.

No new hidden dependencies in this batch. auth-config stays eager because other modules need credentials early; the command libraries (external-open, media-utils, keyboard-macros) are eager only by init order and flagged as Phase 4 deferral candidates.

7 files changed, 65 insertions, 0 deletions

diff --git a/modules/auth-config.el b/modules/auth-config.el
index 02fc7858..7f729f02 100644
--- a/modules/auth-config.el
+++ b/modules/auth-config.el
@@ -3,6 +3,15 @@
 
 ;;; Commentary:
 ;;
+;; Layer: 1 (Foundation).
+;; Category: F/D.
+;; Load shape: eager.
+;; Eager reason: auth-source and GPG/epa setup that other modules rely on for
+;;   credentials early in the session.
+;; Top-level side effects: auth-source/epa configuration via use-package and setq.
+;; Runtime requires: system-lib, user-constants.
+;; Direct test load: yes (configuration only).
+;;
 ;; Configuration for Emacs authentication and GPG integration:
 
 ;; • auth-source
diff --git a/modules/external-open.el b/modules/external-open.el
index 57cffadc..22e56a29 100644
--- a/modules/external-open.el
+++ b/modules/external-open.el
@@ -3,6 +3,15 @@
 ;;
 ;;; Commentary:
 ;;
+;; Layer: 2 (Core UX).
+;; Category: L/D.
+;; Load shape: eager.
+;; Eager reason: command library with no side effects; eager only by init order.
+;;   A deferral candidate (autoload commands) for Phase 4.
+;; Top-level side effects: none.
+;; Runtime requires: host-environment, system-lib, external-open-lib, cl-lib.
+;; Direct test load: yes (pure command helpers).
+;;
 ;; This library provides a simple mechanism for opening files with specific
 ;; extensions using your operating system’s default application rather than
 ;; visiting them in an Emacs buffer.  It offers:
diff --git a/modules/keyboard-macros.el b/modules/keyboard-macros.el
index 5cd89f21..4e801096 100644
--- a/modules/keyboard-macros.el
+++ b/modules/keyboard-macros.el
@@ -3,6 +3,15 @@
 
 ;;; Commentary:
 ;;
+;; Layer: 2 (Core UX).
+;; Category: C/L.
+;; Load shape: eager.
+;; Eager reason: lightweight keyboard-macro commands; eager only by init order.
+;;   A deferral candidate (autoload commands) for Phase 4.
+;; Top-level side effects: none.
+;; Runtime requires: subr-x, user-constants.
+;; Direct test load: yes.
+;;
 ;; This library provides a simple, end-user–focused interface for
 ;; creating, naming, saving, and replaying keyboard macros in Emacs.
 ;; All commands are built on top of the built-in =kmacro= machinery, but
diff --git a/modules/media-utils.el b/modules/media-utils.el
index db66a71f..685530d8 100644
--- a/modules/media-utils.el
+++ b/modules/media-utils.el
@@ -2,6 +2,15 @@
 ;;
 ;;; Commentary:
 ;;
+;; Layer: 3 (Domain Workflow).
+;; Category: D/L.
+;; Load shape: eager.
+;; Eager reason: command library with no side effects; eager only by init order.
+;;   Downloads and players should run by command, so a Phase 4 deferral candidate.
+;; Top-level side effects: none.
+;; Runtime requires: system-lib.
+;; Direct test load: yes (pure command helpers).
+;;
 ;; This library provides reusable Emacs methods for working with online and
 ;; local media, to support media download and playback from Emacs.
 ;;
diff --git a/modules/system-utils.el b/modules/system-utils.el
index 43200403..7cf95867 100644
--- a/modules/system-utils.el
+++ b/modules/system-utils.el
@@ -3,6 +3,16 @@
 ;;
 ;;; Commentary:
 ;;
+;; Layer: 2 (Core UX).
+;; Category: L/C/S.
+;; Load shape: eager.
+;; Eager reason: registers global keys (C-c b, C-<f10>, list-buffers remap) and
+;;   a startup hook for its enhanced commands.
+;; Top-level side effects: three keymap-global-set, one emacs-startup-hook, plus
+;;   use-package configuration.
+;; Runtime requires: system-lib, external-open-lib.
+;; Direct test load: yes.
+;;
 ;; A "system-util" is an enhancement to common a Emacs command, or the extension
 ;; of an existing command. Perhaps this group can be better named.
 ;;
diff --git a/modules/text-config.el b/modules/text-config.el
index 4e9208bc..5a946d52 100644
--- a/modules/text-config.el
+++ b/modules/text-config.el
@@ -3,6 +3,15 @@
 
 ;;; Commentary:
 ;;
+;; Layer: 2 (Core UX).
+;; Category: C/P.
+;; Load shape: eager.
+;; Eager reason: general text-editing defaults and mode hooks the first session
+;;   relies on.
+;; Top-level side effects: three add-hook plus use-package package configuration.
+;; Runtime requires: none (configures packages via use-package).
+;; Direct test load: yes.
+;;
 ;; Configuration for text editing features including:
 ;; - Basic text mode settings (visual line mode, indentation, spacing)
 ;; - Text manipulation (move-text, expand-region, change-inner)
diff --git a/modules/undead-buffers.el b/modules/undead-buffers.el
index c85bde94..fe43575e 100644
--- a/modules/undead-buffers.el
+++ b/modules/undead-buffers.el
@@ -2,6 +2,16 @@
 
 ;;; Commentary:
 ;;
+;; Layer: 2 (Core UX).
+;; Category: C.
+;; Load shape: eager.
+;; Eager reason: global kill-buffer remap and window-kill bindings wanted from
+;;   the first session.
+;; Top-level side effects: three keymap-global-set (remaps kill-buffer; binds
+;;   M-S-o, M-S-m).
+;; Runtime requires: none.
+;; Direct test load: yes.
+;;
 ;; This library allows for "burying" selected buffers instead of killing them.
 ;; Since they won't be killed, I'm calling them "undead buffers".
 ;; The main function cj/kill-buffer-or-bury-alive replaces kill-buffer.