Make all the codegen we do incremental (#64331)

Author: weswigham

.github/workflows/ci.yml

@@ -294,12 +294,6 @@ jobs:
       - uses: ./.github/actions/setup-go
       - run: npm ci
       - run: npx hereby generate
-      - run: npx hereby generate:enums
-      - run: npx hereby generate:ast
-      - run: npx hereby generate:vendor
-      - run: node ./tsc/internal/lsp/lsproto/_generate/fetchModel.mts
-      - run: node ./tsc/internal/lsp/lsproto/_generate/generate.mts
-      - run: npx hereby generate:extension
       - run: npx hereby check:scripts
       - run: git add .
       - run: git diff --staged --exit-code --stat

CONTRIBUTING.md

@@ -103,12 +103,20 @@ npx hereby build         # Build the native compiler into built/local/tsc
 npx hereby test          # Run compiler and language-service Go tests
 npx hereby test:all      # Also run benchmarks, tools, and API tests
 npx hereby lint          # Run custom golangci-lint for both Go modules
-npx hereby generate      # Regenerate compiler sources and bundled assets
+npx hereby generate:go   # Run the generators also exposed through go generate
+npx hereby generate      # Regenerate all sources, assets, localization, and vendored files
 npx hereby format        # Format Go, TypeScript, JSON, and YAML
 npx hereby check:format  # Check formatting without changing files
 npx hereby tidy          # Tidy both modules and synchronize go.work
 ```
 
+Generation is owned by `Herebyfile.mjs`; Go directives forward to the same
+`generate:*` tasks for compatibility. Use a subtask such as
+`npx hereby generate:diagnostics` to run one generator group, and pass `--force`
+to bypass incremental caches. `generate` includes every generator and fetches
+the pinned LSP model when its local cache is missing or stale. Use
+`generate:go` for the narrower scope of `go generate ./...` in the `tsc` module.
+
 Package-specific commands:
 
 ```bash