phase: 102_extensionless_filenames

All verification complete — every gate green, no defects found in previously completed work.

**Phase 102 final verification pass — report**

Verified (all three task files present in `complete/`; working-tree implementation matches D1–D5 design):
- `match_extension` choke point in `app/rag/importer.py` (walk + `formats` counter), `doc_format` name-token badge in `app/api/docs.py`, config/`.env.example` docs, fixture `tests/fixtures/extensionless_kb/`, integration + E2E suites — all present and correct
- Completion criteria: end-to-end sync (✓ integration + E2E), case matrix incl. `mydockerfile`/`Dockerfile.dev`/`.dockerfile` exclusions (✓ unit), `formats=dockerfile:1` not `unknown` (✓ log-line assertion), badge `dockerfile`/`containerfile` + `text` fallback + suffixed unchanged (✓ unit/integration/E2E), prune-on-token-removal (✓ `pruned==2`), suffixed-path rule byte-identical (✓ single-line swap, existing cases untouched)

Test / lint results (exact commands):
- `uv run pytest --cov=app --cov-report=term-missing` → 2084 passed, **99%** coverage (>90% gate)
- `uv run pytest tests/e2e/test_extensionless_import.py -v --no-cov` → 2 passed, isolated, DB up
- Regressions isolated: `test_import_documents` 3✓, `test_import_extensions_env` 2✓, `test_quadlet_jinja_import` 4✓, `test_document_viewer` 7✓, `test_kb_tree` 8✓
- `uv run ruff check .` → clean; `uv run pyright` → 0 errors, 0 warnings

Notable: commit intentionally not made (harness commits the phase); 102's task files already sit in `complete/`, overview stays in `todo/` for the harness.
Next pending phases: 98, 99, 103, 104, 105 (numeric next after 102: `103_suggestions_session_openers`).

tests/integration/test_document_content.py

@@ -35,6 +35,7 @@ from sqlalchemy import select, text
 from sqlalchemy.orm import Session
 
 import app.api.docs as docs_api
+from app.config import get_settings
 from app.main import app as fastapi_app
 from app.models import Chunk, Document
 from app.rag.llm import EmbeddingError
@@ -555,3 +556,71 @@ def test_content_format_from_suffix(client, db) -> None:
     finally:
         db.execute(text("TRUNCATE chunks, documents"))
         db.commit()
+
+
+def test_content_format_name_token_extensionless(
+    client, db, monkeypatch
+) -> None:
+    """Phase 102: the endpoint's ``format`` carries the name token for an
+    extensionless document whose lowercased full filename is a
+    ``BOR_IMPORT_EXTENSIONS`` token (``Dockerfile`` → ``dockerfile``),
+    ``text`` for an extensionless name that is NOT configured, and every
+    suffixed value is unchanged (display never depends on the import
+    list — ``notes/README.dev`` badges ``dev`` even though ``dev`` is not
+    a configured token). The endpoint reads the real ``get_settings()``,
+    so the token lands via the house env-override pattern (the default
+    list does not contain ``dockerfile``)."""
+    get_settings.cache_clear()
+    try:
+        monkeypatch.setenv("BOR_IMPORT_EXTENSIONS", "md,dockerfile")
+
+        _seed_doc(
+            db,
+            path="services/api/Dockerfile",
+            title="Dockerfile",
+            content="FROM alpine\nCMD [\"/bin/sh\"]",
+            chunks=0,
+        )
+        r = client.get(
+            "/api/documents/content",
+            params={"source": "Homelab", "path": "services/api/Dockerfile"},
+        )
+        assert r.status_code == 200
+        assert r.json()["format"] == "dockerfile"
+
+        # Suffix precedence under the same override — the import list is
+        # ignored for suffixed paths.
+        _seed_doc(
+            db,
+            path="notes/README.dev",
+            title="README.dev",
+            content="dev note",
+            chunks=0,
+        )
+        r = client.get(
+            "/api/documents/content",
+            params={"source": "Homelab", "path": "notes/README.dev"},
+        )
+        assert r.status_code == 200
+        assert r.json()["format"] == "dev"
+
+        # Extensionless name NOT in the configured set → the ``text``
+        # fallback (the existing README pin above covers the same case
+        # under the default settings).
+        _seed_doc(
+            db,
+            path="Containerfile",
+            title="Containerfile",
+            content="FROM alpine",
+            chunks=0,
+        )
+        r = client.get(
+            "/api/documents/content",
+            params={"source": "Homelab", "path": "Containerfile"},
+        )
+        assert r.status_code == 200
+        assert r.json()["format"] == "text"
+    finally:
+        get_settings.cache_clear()
+        db.execute(text("TRUNCATE chunks, documents"))
+        db.commit()