diff --git a/mqlaunch/lib/mqobsidian/doctor.sh b/mqlaunch/lib/mqobsidian/doctor.sh
index e65c970..778acbd 100644
--- a/mqlaunch/lib/mqobsidian/doctor.sh
+++ b/mqlaunch/lib/mqobsidian/doctor.sh
@@ -2,10 +2,14 @@
 # Health check for the mqobsidian consumer chain. Read-only — NEVER opens
 # anything. Depends on resolve.sh, manifest.sh, errors.sh.
 
+# Coordinates doc ok behavior.
 _doc_ok()      { printf '\033[0;32m[OK]\033[0m %s\n' "$*"; }
+# Coordinates doc missing behavior.
 _doc_missing() { printf '\033[0;31m[MISSING]\033[0m %s\n' "$*"; }
+# Coordinates doc invalid behavior.
 _doc_invalid() { printf '\033[0;33m[INVALID]\033[0m %s\n' "$*"; }
 
+# Coordinates doctor mqobsidian root behavior.
 doctor_mqobsidian_root() {
   local dir
   dir="$(resolve_mqobsidian_dir)"
@@ -26,6 +30,7 @@ doctor_mqobsidian_root() {
   fi
 }
 
+# Coordinates doctor mqobsidian manifest behavior.
 doctor_mqobsidian_manifest() {
   local mf
   mf="$(get_mqobsidian_manifest_path)"
@@ -40,6 +45,7 @@ doctor_mqobsidian_manifest() {
   _doc_ok "manifest found: $mf"
 }
 
+# Coordinates doctor mqobsidian views behavior.
 doctor_mqobsidian_views() {
   local root key rel type path status=0
   root="$(resolve_mqobsidian_dir)"
@@ -57,6 +63,7 @@ doctor_mqobsidian_views() {
   return $status
 }
 
+# Coordinates doctor mqobsidian open command behavior.
 doctor_mqobsidian_open_command() {
   if command -v "${MQOBS_OPENER:-open}" >/dev/null 2>&1; then
     _doc_ok "opener available: ${MQOBS_OPENER:-open}"
@@ -66,6 +73,7 @@ doctor_mqobsidian_open_command() {
   fi
 }
 
+# Runs mqobsidian doctor.
 run_mqobsidian_doctor() {
   local rc=0
   doctor_mqobsidian_root || rc=1
diff --git a/mqlaunch/lib/mqobsidian/errors.sh b/mqlaunch/lib/mqobsidian/errors.sh
index f721604..477716a 100644
--- a/mqlaunch/lib/mqobsidian/errors.sh
+++ b/mqlaunch/lib/mqobsidian/errors.sh
@@ -1,6 +1,9 @@
 #!/usr/bin/env bash
 # mqobsidian consumer — consistent messaging to stderr. Read-only.
 
+# Coordinates mqobsidian error behavior.
 mqobsidian_error() { printf '\033[0;31m[mqobsidian][error]\033[0m %s\n' "$*" >&2; }
+# Coordinates mqobsidian warn behavior.
 mqobsidian_warn()  { printf '\033[0;33m[mqobsidian][warn]\033[0m %s\n' "$*" >&2; }
+# Coordinates mqobsidian info behavior.
 mqobsidian_info()  { printf '\033[0;37m[mqobsidian]\033[0m %s\n' "$*" >&2; }
diff --git a/mqlaunch/lib/mqobsidian/manifest.sh b/mqlaunch/lib/mqobsidian/manifest.sh
index fdf981e..6e308fa 100644
--- a/mqlaunch/lib/mqobsidian/manifest.sh
+++ b/mqlaunch/lib/mqobsidian/manifest.sh
@@ -3,18 +3,21 @@
 # read-only. The manifest is the single source for supported views. Depends on
 # errors.sh.
 
+# Gets mqobsidian manifest path.
 get_mqobsidian_manifest_path() {
   local dir
   dir="$(cd "$(dirname "${BASH_SOURCE[0]}")/../../config/mqobsidian" && pwd)"
   printf '%s\n' "$dir/views.json"
 }
 
+# Coordinates list supported views behavior.
 list_supported_views() {
   local mf
   mf="$(get_mqobsidian_manifest_path)"
   jq -r '.[].key' "$mf"
 }
 
+# Resolves view relative path.
 resolve_view_relative_path() {
   local key="$1" mf out
   mf="$(get_mqobsidian_manifest_path)"
@@ -26,6 +29,7 @@ resolve_view_relative_path() {
   printf '%s\n' "$out"
 }
 
+# Resolves view type.
 resolve_view_type() {
   local key="$1" mf out
   mf="$(get_mqobsidian_manifest_path)"
@@ -37,6 +41,7 @@ resolve_view_type() {
   printf '%s\n' "$out"
 }
 
+# Resolves view label.
 resolve_view_label() {
   local key="$1" mf
   mf="$(get_mqobsidian_manifest_path)"
diff --git a/mqlaunch/lib/mqobsidian/open.sh b/mqlaunch/lib/mqobsidian/open.sh
index c4741fe..50956cc 100644
--- a/mqlaunch/lib/mqobsidian/open.sh
+++ b/mqlaunch/lib/mqobsidian/open.sh
@@ -2,6 +2,7 @@
 # Open a manifest-defined target. Read-only navigation only. Depends on
 # resolve.sh, manifest.sh, errors.sh.
 
+# Builds view absolute path for later command execution.
 build_view_absolute_path() {
   local key="$1" root rel
   root="$(assert_mqobsidian_dir)" || return 1
@@ -9,6 +10,7 @@ build_view_absolute_path() {
   printf '%s/%s\n' "$root" "$rel"
 }
 
+# Coordinates assert view target exists behavior.
 assert_view_target_exists() {
   local key="$1" path type
   path="$(build_view_absolute_path "$key")" || return 1
@@ -31,6 +33,7 @@ open_mqobsidian_path() {
   "${MQOBS_OPENER:-open}" "$path"
 }
 
+# Opens mqobsidian target.
 open_mqobsidian_target() {
   local key="$1" path
   path="$(assert_view_target_exists "$key")" || return 1
diff --git a/mqlaunch/lib/mqobsidian/resolve.sh b/mqlaunch/lib/mqobsidian/resolve.sh
index dfc8dd2..c62f46f 100644
--- a/mqlaunch/lib/mqobsidian/resolve.sh
+++ b/mqlaunch/lib/mqobsidian/resolve.sh
@@ -2,6 +2,7 @@
 # Single source of truth for locating the mqobsidian vault. Read-only.
 # The ONLY place that knows how mqobsidian is found. Depends on errors.sh.
 
+# Resolves mqobsidian dir.
 resolve_mqobsidian_dir() {
   if [[ -n "${MQ_OBSIDIAN_DIR:-}" ]]; then
     printf '%s\n' "$MQ_OBSIDIAN_DIR"
@@ -10,11 +11,13 @@ resolve_mqobsidian_dir() {
   fi
 }
 
+# Checks whether valid mqobsidian root applies.
 is_valid_mqobsidian_root() {
   local dir="$1"
   [[ -d "$dir/systems" && -d "$dir/memory" ]]
 }
 
+# Coordinates assert mqobsidian dir behavior.
 assert_mqobsidian_dir() {
   local dir
   dir="$(resolve_mqobsidian_dir)"
diff --git a/mqlaunch/lib/recommendations/doctor.sh b/mqlaunch/lib/recommendations/doctor.sh
index 808bc1d..009adee 100644
--- a/mqlaunch/lib/recommendations/doctor.sh
+++ b/mqlaunch/lib/recommendations/doctor.sh
@@ -4,6 +4,7 @@
 # invalid/wrong-schema source). Depends on: errors.sh, resolve.sh, parse.sh.
 : "${REC_JQ:=jq}"
 
+# Runs recommendations doctor.
 run_recommendations_doctor() {
   local path
   if ! path="$(assert_recommended_json)"; then
diff --git a/mqlaunch/lib/recommendations/errors.sh b/mqlaunch/lib/recommendations/errors.sh
index b4a4f15..a2884a2 100644
--- a/mqlaunch/lib/recommendations/errors.sh
+++ b/mqlaunch/lib/recommendations/errors.sh
@@ -2,7 +2,11 @@
 # recommendations consumer — consistent messaging to stderr. Read-only.
 # Mirrors lib/mqobsidian/errors.sh so the two consumers feel the same.
 
+# Coordinates rec error behavior.
 rec_error() { printf '\033[0;31m[recommend][error]\033[0m %s\n' "$*" >&2; }
+# Coordinates rec warn behavior.
 rec_warn()  { printf '\033[0;33m[recommend][warn]\033[0m %s\n' "$*" >&2; }
+# Coordinates rec info behavior.
 rec_info()  { printf '\033[0;37m[recommend]\033[0m %s\n' "$*" >&2; }
+# Coordinates rec ok behavior.
 rec_ok()    { printf '\033[0;32m[recommend][ok]\033[0m %s\n' "$*" >&2; }
diff --git a/mqlaunch/lib/recommendations/resolve.sh b/mqlaunch/lib/recommendations/resolve.sh
index 742a4f4..1bb2e4f 100644
--- a/mqlaunch/lib/recommendations/resolve.sh
+++ b/mqlaunch/lib/recommendations/resolve.sh
@@ -31,6 +31,7 @@ REC_SCHEMA="command-recommendations.v1"
 # Defaults to the bare name so an un-bootstrapped call still works on a sane PATH.
 : "${REC_JQ:=jq}"
 
+# Resolves recommended json path.
 resolve_recommended_json_path() {
   if [[ -n "${MQ_RECOMMENDED_JSON:-}" ]]; then
     printf '%s\n' "$MQ_RECOMMENDED_JSON"
diff --git a/scripts/check-skills.sh b/scripts/check-skills.sh
index 4a39c4d..025590b 100755
--- a/scripts/check-skills.sh
+++ b/scripts/check-skills.sh
@@ -19,9 +19,12 @@ BEGIN_MARK="<!-- BEGIN GENERATED SKILLS TABLE -->"
 END_MARK="<!-- END GENERATED SKILLS TABLE -->"
 
 FAIL=0
+# Marks a failing check.
 fail() { echo "FAIL: $1"; FAIL=1; }
+# Coordinates ok behavior.
 ok()   { echo "PASS: $1"; }
 
+# Coordinates frontmatter field behavior.
 frontmatter_field() {
   awk -v key="$2" -F': ' '$1 == key { sub("^" key ": ", ""); print; exit }' "$1"
 }
@@ -84,6 +87,7 @@ done < <(grep -HoE '`[A-Za-z][A-Za-z0-9._/-]*/[A-Za-z0-9._/*<>-]*`' skills/*/SKI
 
 # --- 5: SKILLS.md table generated from frontmatter ---------------------------
 
+# Generates table for docs or release automation.
 generate_table() {
   echo "$BEGIN_MARK"
   echo "| Skill | Description |"
diff --git a/terminal/launchers/gitmerge-safe.sh b/terminal/launchers/gitmerge-safe.sh
index 17af019..73d9295 100755
--- a/terminal/launchers/gitmerge-safe.sh
+++ b/terminal/launchers/gitmerge-safe.sh
@@ -2,16 +2,22 @@
 set -euo pipefail
 IFS=$'\n\t'
 
+# Coordinates red behavior.
 red()    { printf '\033[31m%s\033[0m\n' "$*"; }
+# Coordinates green behavior.
 green()  { printf '\033[32m%s\033[0m\n' "$*"; }
+# Coordinates yellow behavior.
 yellow() { printf '\033[33m%s\033[0m\n' "$*"; }
+# Coordinates blue behavior.
 blue()   { printf '\033[34m%s\033[0m\n' "$*"; }
 
+# Coordinates die behavior.
 die() {
   red "Error: $*"
   exit 1
 }
 
+# Verifies the required cmd helper is available before continuing.
 require_cmd() {
   command -v "$1" >/dev/null 2>&1 || die "Missing command: $1"
 }
diff --git a/terminal/menus/mq-agent-menu.sh b/terminal/menus/mq-agent-menu.sh
index d0ab5ac..a7741cc 100644
--- a/terminal/menus/mq-agent-menu.sh
+++ b/terminal/menus/mq-agent-menu.sh
@@ -391,6 +391,7 @@ _agent_menu_cochange_review() {
   done
 }
 
+# Runs agent command.
 run_agent_command() {
   local subcmd="${1:-menu}"
   case "$subcmd" in
diff --git a/terminal/menus/mq-dev-menu.sh b/terminal/menus/mq-dev-menu.sh
index d8a6195..cf264e0 100755
--- a/terminal/menus/mq-dev-menu.sh
+++ b/terminal/menus/mq-dev-menu.sh
@@ -62,7 +62,7 @@ print_dev_menu() {
   surface_row "" "$width" "$panel_color"
   surface_row "MAINTENANCE" "$width" "$panel_color"
   surface_split_row "${C_WARN}13. Repo Signal Folder Check${C_RESET}" "14. Env Snapshot" "$width" "$panel_color"
-  surface_split_row "15. Comment scripts" "" "$width" "$panel_color"
+  surface_split_row "15. Comment scripts" "16. Excalidraw" "$width" "$panel_color"
   surface_row "" "$width" "$panel_color"
   surface_split_row "b. Back" "" "$width" "$panel_color"
   surface_row "" "$width" "$panel_color"
@@ -91,6 +91,7 @@ handle_dev_menu_choice() {
     13) run_dev_script "REPO SIGNAL FOLDER CHECK" "$(dev_repo_path "terminal/dev/mq-repo-signal-folder-check.sh")" ;;
     14) run_dev_script "ENV SNAPSHOT" "$(dev_repo_path "tools/scripts/env-snap.sh")" ;;
     15) run_dev_script "COMMENT SCRIPTS" "$(dev_repo_path "terminal/menus/mq-tools-menu.sh")" docfunc ;;
+    16) run_dev_script "EXCALIDRAW" "$(dev_repo_path "tools/scripts/excalidraw.sh")" ;;
     a|A) PYTHONPATH="${BASE_DIR}" python3 -m mqlaunch.b2_tui.main ;;
     b|B|x|X|exit) return 1 ;;
     *) echo "${C_ERR}Invalid dev selection:${C_RESET} $choice"; pause_enter ;;
diff --git a/terminal/menus/recommendations-menu.sh b/terminal/menus/recommendations-menu.sh
index cad538c..638f47f 100755
--- a/terminal/menus/recommendations-menu.sh
+++ b/terminal/menus/recommendations-menu.sh
@@ -78,6 +78,7 @@ render_recommendations_panel() {
 # Prompts for a visible pattern and stores its id in REC_PICKED. Returns non-zero
 # on cancel / invalid / empty visible set (the prompt itself reports why).
 REC_PICKED=""
+# Coordinates rec menu pick visible behavior.
 _rec_menu_pick_visible() {
   local path="$1" sel
   REC_PICKED=""
diff --git a/tests/dashboard-header-cache-smoke.sh b/tests/dashboard-header-cache-smoke.sh
index 023c93d..0777e54 100755
--- a/tests/dashboard-header-cache-smoke.sh
+++ b/tests/dashboard-header-cache-smoke.sh
@@ -5,7 +5,9 @@ ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
 TMP="$(mktemp -d)"
 trap 'rm -rf "$TMP"' EXIT
 
+# Marks a failing check.
 fail() { printf '[FAIL] %s\n' "$1" >&2; exit 1; }
+# Marks a passing check.
 pass() { printf '[PASS] %s\n' "$1"; }
 
 # Stub dashboard: appends a line to a counter file every time it runs, and
@@ -21,6 +23,7 @@ STUBEOF
 chmod +x "$STUB"
 export COUNT_FILE
 
+# Coordinates runs behavior.
 runs() { wc -l < "$COUNT_FILE" | tr -d ' '; }
 
 # shellcheck disable=SC1090
diff --git a/tests/git-status-contract-smoke.sh b/tests/git-status-contract-smoke.sh
index e2e9fd1..1810f7a 100755
--- a/tests/git-status-contract-smoke.sh
+++ b/tests/git-status-contract-smoke.sh
@@ -5,11 +5,13 @@ ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
 TMP_REPO="$(mktemp -d)"
 trap 'rm -rf "$TMP_REPO"' EXIT
 
+# Marks a failing check.
 fail() {
   printf '[FAIL] %s\n' "$1" >&2
   exit 1
 }
 
+# Marks a passing check.
 pass() {
   printf '[PASS] %s\n' "$1"
 }
diff --git a/tools/scripts/excalidraw.sh b/tools/scripts/excalidraw.sh
index 39ab07b..f9f16c9 100755
--- a/tools/scripts/excalidraw.sh
+++ b/tools/scripts/excalidraw.sh
@@ -9,20 +9,24 @@ LOG_DIR="${EXCALIDRAW_LOG_DIR:-$HOME/Library/Logs/mqlaunch}"
 
 mkdir -p "$LOG_DIR"
 
+# Coordinates die behavior.
 die() {
   printf 'excalidraw: %s\n' "$*" >&2
   exit 1
 }
 
+# Coordinates need dir behavior.
 need_dir() {
   [[ -d "$1" ]] || die "missing directory: $1"
 }
 
+# Coordinates port listening behavior.
 port_listening() {
   local port="$1"
   lsof -nP -iTCP:"$port" -sTCP:LISTEN >/dev/null 2>&1
 }
 
+# Coordinates wait for url behavior.
 wait_for_url() {
   local url="$1"
   local label="$2"
@@ -39,6 +43,7 @@ wait_for_url() {
   die "$label did not become ready at $url"
 }
 
+# Ensures yarn is ready.
 ensure_yarn() {
   if command -v yarn >/dev/null 2>&1; then
     return 0
@@ -49,6 +54,7 @@ ensure_yarn() {
   corepack prepare yarn@1.22.22 --activate >/dev/null
 }
 
+# Coordinates start proxy behavior.
 start_proxy() {
   need_dir "$PROXY_DIR"
 
@@ -69,6 +75,7 @@ start_proxy() {
   )
 }
 
+# Coordinates start frontend behavior.
 start_frontend() {
   need_dir "$EXCALIDRAW_DIR"
 
@@ -86,6 +93,7 @@ start_frontend() {
   )
 }
 
+# Runs the main entry point.
 main() {
   start_proxy
   wait_for_url "$PROXY_URL/health" "proxy"
diff --git a/ui/terminal-ui/mq-ui.sh b/ui/terminal-ui/mq-ui.sh
index e56f677..9f906fd 100644
--- a/ui/terminal-ui/mq-ui.sh
+++ b/ui/terminal-ui/mq-ui.sh
@@ -398,6 +398,7 @@ print_dashboard_header() {
   printf '%s\n' "$MQ_DASHBOARD_CACHE_OUTPUT"
 }
 
+# Prints header.
 print_header() {
   local dashboard nickname