chore(deps, markers): add sqlite-vec dep, e2e_fast marker

- Add sqlite-vec>=0.1.0 to vector optional deps
- Add e2e_fast marker for quick E2E tests

pyproject.toml

@@ -48,6 +48,7 @@ test = [
 vector = [
     "chromadb>=0.5.0",
     "openai>=1.0.0",
+    "sqlite-vec>=0.1.0",
 ]
 
 [project.scripts]
@@ -74,7 +75,6 @@ paperforge = [
 
 [tool.pytest.ini_options]
 addopts = "--ignore=tests/sandbox/00_TestVault/ --strict-markers"
-testpaths = ["tests/unit", "tests/cli", "tests/e2e", "tests/journey", "tests/chaos", "tests/audit", "tests/integration"]
 markers = [
     "unit: Unit tests (Level 1) — fast, isolated",
     "cli: CLI contract tests (Level 2) — subprocess boundary",
@@ -83,10 +83,10 @@ markers = [
     "chaos: Destructive tests (Level 6) — abnormal scenarios",
     "audit: Consistency audit tests — validate L1 mocks against L4 real pipeline output",
     "integration: Integration tests — multi-component workflows",
+    "e2e_fast: E2E tests that run quickly (seconds), tagged after fixture setup",
     "slow: Tests that take >30s (skip during development)",
     "snapshot: Tests that use snapshot comparison",
 ]
-
 [tool.ruff]
 target-version = "py310"
 line-length = 120