feat(scripts): expand docker-prep consumers + python Dockerfile support

- sync-docker-prep.sh: add MindLyst, LysnrAI, talk2obsidian to consumer list
- docker-doctor.sh: detect Python Dockerfiles (python:3.x base) and skip
  Node-specific checks (pnpm/corepack, .npmrc.docker ARGs). Python base
  images are now in the approved list alongside node:22-{alpine,slim}.

Refs: docker-build-optimization-roadmap.md \xc2\xa7 D

scripts/docker-doctor.sh

@@ -96,6 +96,13 @@ for df in $DOCKERFILES; do
   say ""
   say "── $df"
 
+  # Detect Python vs Node Dockerfiles to apply the right checks.
+  IS_PYTHON=false
+  if grep -qE '^FROM[[:space:]]+python:' "$df"; then
+    IS_PYTHON=true
+    say "  (detected Python Dockerfile — skipping Node-specific checks)"
+  fi
+
   # 3a. Syntax directive (enables BuildKit features)
   if head -1 "$df" | grep -q '^# syntax=docker/dockerfile'; then
     ok "BuildKit syntax directive present"
@@ -103,11 +110,16 @@ for df in $DOCKERFILES; do
     warn "missing '# syntax=docker/dockerfile:1.7' directive (A2 cache mounts need it)"
   fi
 
-  # 3b. Base image on approved list
-  if grep -qE '^FROM (\$\{BASE_IMAGE[^}]*\}|node:22-alpine|node:22-slim)' "$df"; then
+  # 3b. Base image on approved list (Node OR Python)
+  if grep -qE '^FROM (\$\{BASE_IMAGE[^}]*\}|node:22-alpine|node:22-slim|python:3\.[0-9]+(-slim|-alpine)?)' "$df"; then
     ok "approved base image"
   else
-    err "non-approved base image — must use node:22-alpine, node:22-slim, or \${BASE_IMAGE} ARG"
+    err "non-approved base image — must use node:22-alpine, node:22-slim, python:3.x(-slim/-alpine), or \${BASE_IMAGE} ARG"
+  fi
+
+  # Skip pnpm/Node checks for Python Dockerfiles
+  if $IS_PYTHON; then
+    continue
   fi
 
   # 3c. corepack — not legacy global pnpm install

scripts/sync-docker-prep.sh

@@ -41,6 +41,9 @@ CONSUMERS=(
   "learning_ai_trails"
   "learning_ai_local_memory_gpt"
   "learning_ai_efforise"
+  "learning_multimodal_memory_agents"
+  "learning_voice_ai_agent"
+  "learning_ai_talk2obsidian"
 )
 
 if [ -n "$SINGLE_REPO" ]; then