Remove dangling component-model leftovers (#158)

## Summary
- remove the obsolete `component-demo/` directory
- remove unused `cargo-component`/`jco` tooling entries from xtask tool
management
- rename `generate_component` / `generate-component` to
`generate_plugin` / `generate-plugin` across grammar metadata, code, and
docs
- clean stale component-model wording in docs/comments to match the
current WASM plugin architecture

## Validation
- `cargo check` (in `xtask/`) succeeds
- `cargo run -- lint` (in `xtask/`) succeeds (with existing non-strict
parser generation warnings)

Closes #157

Author: fasterthanlime

ADDING_GRAMMARS.md

@@ -129,7 +129,7 @@ grammars:
 
     # Technical flags
     has_scanner: true             # Set to true if scanner.c exists
-    generate_component: true      # Set to true to include in WASM builds
+    generate_plugin: true      # Set to true to include in WASM builds
 
     # Visual representation
     icon: devicon-plain:groovy    # Icon identifier (from iconify.design)
@@ -180,7 +180,7 @@ grammars:
 | `link` | String | ✅ Yes | Wikipedia or official documentation URL |
 | `trivia` | String | ✅ Yes | Interesting fact about the language |
 | `has_scanner` | Boolean | No | Set to `true` if `scanner.c` exists (default: `false`) |
-| `generate_component` | Boolean | No | Set to `true` to include in WASM plugin builds (default: `false`) |
+| `generate_plugin` | Boolean | No | Set to `true` to include in WASM plugin builds (default: `false`) |
 | `grammar_path` | String | No | For multi-grammar crates (e.g., `"dtd"` for XML/DTD) |
 
 #### Sample Fields (in `samples` list)
@@ -355,7 +355,7 @@ grammars:
     tag: data
     tier: 3
     has_scanner: true
-    generate_component: true
+    generate_plugin: true
     icon: simple-icons:webassembly
 
     inventor: Bytecode Alliance
@@ -804,7 +804,7 @@ cargo xtask lint --strict
 
 #### `cargo xtask build [languages...]`
 
-Builds language crates into WASM plugins (if `generate-component #true`).
+Builds language crates into WASM plugins (if `generate-plugin #true`).
 
 ```bash
 # Build a specific language
@@ -858,7 +858,7 @@ cargo xtask gen groovy
 # 4. Validate configuration
 cargo xtask lint
 
-# 5. Build (if generate-component is enabled)
+# 5. Build (if generate-plugin is enabled)
 cargo xtask build groovy
 
 # 6. Start dev server
@@ -1048,7 +1048,7 @@ tree-sitter highlight ../samples/example.groovy \
 
 **Fix:**
 - Ensure release mode: `cargo xtask build --release`
-- Consider setting `generate-component #false` for rarely-used languages
+- Consider setting `generate-plugin #false` for rarely-used languages
 - Report to upstream if grammar seems bloated
 
 ---
@@ -1095,7 +1095,7 @@ grammars:
     tag: code
     tier: 2
     has_scanner: true
-    generate_component: true
+    generate_plugin: true
     icon: devicon-plain:groovy
 
     inventor: James Strachan
@@ -1176,7 +1176,7 @@ grammars:
     tag: config
     tier: 1
     has_scanner: false  # ← No scanner
-    generate_component: true
+    generate_plugin: true
     icon: simple-icons:toml
 
     inventor: Tom Preston-Werner
@@ -1226,12 +1226,12 @@ grammars:
 
 ### WASM Plugin Configuration
 
-Set `generate_component: true` to include in WASM builds:
+Set `generate_plugin: true` to include in WASM builds:
 
 ```yaml
 grammars:
   - id: groovy
-    generate_component: true  # Build WASM plugin
+    generate_plugin: true  # Build WASM plugin
     # ...
 ```
 

DEVELOP.md

@@ -234,7 +234,7 @@ grammar {
     icon "devicon-plain:rust"
     aliases "rs"
     has-scanner #true
-    generate-component #true
+    generate-plugin #true
 
     sample {
         path "samples/example.rs"
@@ -246,6 +246,6 @@ grammar {
 
 **Key fields:**
 - `license` - SPDX license for the grammar (used in generated Cargo.toml)
-- `generate-component #true` - Include in WASM plugin builds
+- `generate-plugin #true` - Include in WASM plugin builds
 - `has-scanner #true` - Grammar has external scanner (scanner.c)
 - `tier` - 1-5, affects default feature inclusion

PUBLISH.md

@@ -63,10 +63,9 @@ The `v0.3.0` tag triggers the CI workflow in `.github/workflows/ci.yml` which:
 
 ### 2. WASM Plugins → npm
 
-- All grammars with `generate-component: true` in
+- All grammars with `generate-plugin: true` in
   `langs/group-{animal}/{lang}/def/arborium.kdl`
-- Built via `cargo-component` for `wasm32-wasip2` from the same group directory
-- Transpiled via `jco` for browser compatibility
+- Built via `cargo xtask build` for `wasm32-unknown-unknown` from the same group directory
 - Published as per-language packages under the `@arborium` scope, e.g.
   `@arborium/rust`, `@arborium/javascript`, etc.
 - **Published together with crates.io** in the same per-group CI job for version sync
@@ -162,7 +161,7 @@ langs/group-{animal}/{lang}/crate/
         └── ...
 
 langs/group-{animal}/{lang}/npm/
-├── Cargo.toml            ← GENERATED for cargo-component
+├── Cargo.toml            ← GENERATED for cargo xtask build
 ├── src/
 │   └── bindings.rs      ← GENERATED bindings
 └── package.json          ← GENERATED npm package
@@ -195,7 +194,7 @@ These crates don't have `arborium.kdl` and are fully hand-written:
    - Runs tree-sitter generate into `grammar/src/*`
 
 4. **Generates WASM plugin packages:**
-   - Writes `langs/group-{animal}/{lang}/npm/Cargo.toml` for cargo-component build
+   - Writes `langs/group-{animal}/{lang}/npm/Cargo.toml` for plugin builds
    - Writes `langs/group-{animal}/{lang}/npm/package.json` for npm publishing
    - Writes `langs/group-{animal}/{lang}/npm/src/bindings.rs` generated bindings
 
@@ -259,10 +258,9 @@ These projects use arborium for syntax highlighting:
 
 ### In Progress
 
-- [ ] WASM component plugin system
-  - [x] WIT interfaces defined (`grammar.wit`, `host.wit`)
+- [ ] WASM plugin system
   - [x] Plugin runtime crate (`arborium-plugin-runtime`)
-  - [x] Host component (`arborium-host`)
+  - [x] Host runtime crate (`arborium-host`)
   - [x] Injection dependency resolution in browser
   - [ ] Dynamic grammar loading from bytes (currently loads from CDN)