feat: character system v2 — schema upgrade, memory system, per-character TTS routing

Character schema v2: background, dialogue_style, appearance, skills, gaze_presets
with automatic v1→v2 migration. LLM-assisted character creation via Character MCP
server. Two-tier memory system (personal per-character + general shared) with
budget-based injection into LLM system prompt. Per-character TTS voice routing via
state file — Wyoming TTS server reads active config to route between Kokoro (local)
and ElevenLabs (cloud PCM 24kHz). Dashboard: memories page, conversation history,
character profile on cards, auto-TTS engine selection from character config.
Also includes VTube Studio expression bridge and ComfyUI API guide.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

homeai-visual/launchd/com.homeai.vtube-bridge.plist

@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN"
+  "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>Label</key>
+  <string>com.homeai.vtube-bridge</string>
+
+  <key>ProgramArguments</key>
+  <array>
+    <string>/Users/aodhan/homeai-visual-env/bin/python3</string>
+    <string>/Users/aodhan/gitea/homeai/homeai-visual/vtube-bridge.py</string>
+    <string>--port</string>
+    <string>8002</string>
+    <string>--character</string>
+    <string>/Users/aodhan/gitea/homeai/homeai-dashboard/characters/aria.json</string>
+  </array>
+
+  <key>RunAtLoad</key>
+  <true/>
+
+  <key>KeepAlive</key>
+  <true/>
+
+  <key>StandardOutPath</key>
+  <string>/tmp/homeai-vtube-bridge.log</string>
+
+  <key>StandardErrorPath</key>
+  <string>/tmp/homeai-vtube-bridge-error.log</string>
+
+  <key>ThrottleInterval</key>
+  <integer>10</integer>
+
+  <key>EnvironmentVariables</key>
+  <dict>
+    <key>PATH</key>
+    <string>/opt/homebrew/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin</string>
+  </dict>
+</dict>
+</plist>