diff --git a/README.md b/README.md
index 2273ef5..878eb2b 100644
--- a/README.md
+++ b/README.md
@@ -23,23 +23,58 @@ sporel-atlas-baker \
   [--verbose]
 ```
 
+### Modes
+
+The baker supports two output topologies:
+
+| Mode | Default | Output |
+|---|---|---|
+| `tilemap` (default) | Paired diffuse + height tiles on a fixed grid (blob-14 + collision sidecar supported) | `<atlas>.diffuse.png` + `<atlas>.height.png` + `<atlas>.atlas.json` + `<atlas>.atlas.lock.json` |
+| `sprite` | Diffuse-only, unregelmäßige Einzel-Sprites | `<atlas>/sprites.diffuse.atlas.png` + `<atlas>/sprites.uv.json` + `<atlas>/sprites.atlas.lock.json` |
+
+Select via `--mode {tilemap|sprite}`. tilemap-mode is the default for
+backward compatibility with v0.2.0 call-sites.
+
 ### Flags
 
-| Flag | Meaning |
-| --- | --- |
-| `--in <source-dir>` | Directory of source tile images. |
-| `--out <atlas-dir>` | Output directory for the baked atlas + sidecars. |
-| `--atlas-id <stable-id>` | Stable atlas identifier written into the lock. |
-| `--tile-size <N\|auto>` | Tile edge length in pixels, or `auto` to infer it from the source tiles. |
-| `--max-size <N>` | Maximum atlas dimension in pixels (default 4096). |
-| `--pad-px <N>` | Edge-replicated padding (gutter) applied around each tile, in pixels (Rev 4 §13.3). |
-| `--schema <blob-14>` | Slot-validation schema for the source set. `blob-14` is the v0.2 14-slot blob schema (E1); required by lib-core.maps v0.5.1. |
-| `--lock <existing-lock.json>` | Reuse an existing lock to keep tile indices stable. |
-| `--blocks-sight-pattern <regex>` | Regex matching tile names that block line of sight. |
-| `--verbose` | Print detailed per-tile diagnostics. |
+| Flag | Tilemap | Sprite | Meaning |
+| --- | --- | --- | --- |
+| `--in <source-dir>` | required | required | Source directory. |
+| `--out <atlas-dir>` | required | required | Output directory. |
+| `--atlas-id <id>` | required | required | Stable atlas identifier. |
+| `--mode {tilemap\|sprite}` | default | toggle | Output topology. |
+| `--tile-size <N\|auto>` | yes | ignored | Tile edge length. |
+| `--max-size <N>` | yes | yes | Max atlas dimension (default 4096). |
+| `--pad-px <N>` | yes (default 2) | yes (default 1) | Per-tile/sprite padding. |
+| `--schema blob-14` | yes | warn+ignore | Slot validation (E1+E2). |
+| `--strip-prefix "<s>"` | ignored | yes | Strip leading prefix from sprite filenames before alias normalisation. |
+| `--lock <path>` | yes | yes | Reuse existing lock for stable IDs. |
+| `--blocks-sight-pattern <re>` | yes | ignored | Regex matching tiles that block LOS. |
+| `--verbose` | yes | yes | Detailed diagnostics. |
 
 See `sporel-meta/docs/superpowers/specs/2026-05-21-map-multi-layer-design.md` §4 for the format spec.
 
+### Sprite-Mode Output Format
+
+`<out>/<atlas-id>/sprites.uv.json` carries the alias → UV table:
+
+```json
+{
+  "atlas_id": "tcbasics",
+  "atlas_size": [W, H],
+  "sprites": {
+    "bed1":   { "x": 0,  "y": 0, "w": 256, "h": 128, "source_file": "Bed1.png" },
+    "bench1": { "x": 256,"y": 0, "w": 192, "h":  96, "source_file": "Bench1.png" }
+  }
+}
+```
+
+`sprites.atlas.lock.json` carries the stable alias-set + source-file
+mapping; pass it via `--lock` on re-bakes to preserve alias ordering
+when the input set grows. Removed aliases surface as `WARN`-lines on
+stderr (dropped from the new lock; consumers referencing the dropped
+alias will fail at sample-time).
+
 ## Development
 
 ```bash
diff --git a/package.json b/package.json
index d45a8cf..e95b9ae 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "sporel-tool-atlas-baker",
-  "version": "0.2.0",
-  "description": "Bake paired diffuse + height PNG atlases for the Sporel map-lib v0.3.0+ format. v0.2: edge-replicated padding (Rev 4 §13.3), --schema blob-14 E1 slot validation, collision.json sidecar E2 validation + pass-through, alpha-analysis opaque flag. Accepts PNG/WebP/JPG via jimp.",
+  "version": "0.3.0",
+  "description": "Bake paired diffuse + height PNG atlases for the Sporel map-lib v0.3.0+ format. v0.2: edge-replicated padding (Rev 4 §13.3), --schema blob-14 E1 slot validation, collision.json sidecar E2 validation + pass-through, alpha-analysis opaque flag. Accepts PNG/WebP/JPG via jimp; v0.3 adds --mode sprite for diffuse-only atlases of irregularly-sized sprites with alias→UV-table sidecar",
   "bin": {
     "sporel-atlas-baker": "bin/atlas-baker.js"
   },