Implement CE-WP-0001 Foundations: TS scaffold, lint boundaries, normalize v1, fixtures

T01 Toolchain — vite + pnpm 9.15 + React 18 + strict TS (ADR-0001).
T02 Folder layout — src/{shared,engine,anchor,source,binder,work,app}/
    mirroring the future subsystem split, with path aliases.
T03 Boundary lint — eslint-plugin-boundaries enforcing the dependency
    edges from wiki/DependencyMap.md §4; verified by a violating fixture.
T04 Canonical normalization v1 — src/shared/text/normalize.ts with
    NORMALIZE_VERSION=1; 10/10 vitest covering ligatures, CRLF, soft
    hyphens (including line-break reassembly), mixed whitespace.
T05 PDF fixture corpus — 7 user-supplied German PDFs in fixtures/pdfs/
    (gitignored binaries) plus a manifest with verbatim known-good
    quotes and page counts, ready for CE-WP-0002 selector tests.
T06 README upgrade — umbrella README points at wiki/docs/workplans
    and documents the dev workflow.
T07 ADR-0002..0006 stubs in docs/decisions/.

Toolchain end-to-end: pnpm install + lint + typecheck + test all green.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

.gitignore

@@ -174,3 +174,38 @@ cython_debug/
 # PyPI configuration file
 .pypirc
 
+
+# ---> Node / Vite / pnpm (CE-WP-0001-T01)
+node_modules/
+.pnpm-store/
+.pnpm-debug.log*
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Vite build output
+dist-ssr/
+*.local
+
+# Vitest
+coverage/
+
+# TypeScript incremental build cache
+*.tsbuildinfo
+
+# Editor / IDE
+.vscode/
+!.vscode/extensions.json
+.idea/
+*.swp
+*.swo
+
+# OS
+.DS_Store
+Thumbs.db
+
+# ---> PDF fixtures (CE-WP-0001-T05)
+# Binaries stay local until per-file licensing is cleared in
+# fixtures/pdfs/SOURCES.md. The manifest and SOURCES.md are committed;
+# add `!fixtures/pdfs/<filename>.pdf` exceptions as files are cleared.
+fixtures/pdfs/*.pdf