docs: fix stale image-gen refs, Node prereq, version sync; drop dead icons.svg

- README: image gen is sd-server (cross-platform), not macOS/Ollama;
  Node 23.6+ note for self-checks; prefs store row in the data table.
- plan.md: superseded banners on the Ollama image-gen sections.
- gitea-release.sh: syncs Cargo.toml too; bumped to 0.1.3 to match.
- public/icons.svg: unreferenced — favicon.svg is the icon.

README.md

@@ -18,7 +18,7 @@ into **Session** (live) and **World** (prep) tools:
 - **NPC Generator** — portraits, personality, goals, stat blocks
 - **Quest Designer** — multi-step quests with twists and reward breakdown
 - **Item Forge** — magic items with art and structured mechanics
-- **Image Generator** — portraits, maps, scene art (macOS, via Ollama)
+- **Image Generator** — portraits, maps, scene art (cross-platform, via stable-diffusion.cpp)
 - **Session Logger** — Markdown notes, multiple sessions, streaming AI summary
 - **Soundboard** — synthesized ambience/SFX with one-click scenes
 - **World Builder** — generated regions, landmarks, a draggable-pin map
@@ -34,7 +34,7 @@ persistent state round it out — reload loses nothing.
 ### Prerequisites
 
 - **Rust** + **Cargo** — https://rustup.rs
-- **Node.js** 20+ — https://nodejs.org
+- **Node.js** 20+ (23.6+ to run the `npm run check` self-checks) — https://nodejs.org
 - **[Ollama](https://ollama.com)** running locally (default `http://localhost:11434`)
 
 ### Install & run
@@ -66,7 +66,8 @@ All campaign data stays on disk under your OS app-data dir (default
 
 | File | Contents |
 |------|----------|
-| `lore.db` | RAG chunks + embeddings (SQLite) |
+| `dm-pal-prefs.json` | App prefs — data-dir setting + LLM config incl. API key (stored locally, one level above `dm-toolkit/`) |
+| `lore/lore.db` | RAG chunks + embeddings (SQLite) |
 | `generations.db` | History of every generated NPC/encounter/item/quest/… |
 | `images/` | Cached generated PNGs, keyed by prompt hash |
 | `dm-pal-state.json` | UI state (initiative, dice history, calendar events, …) |