fix: align loader tests with renamed manifest API and strip ticket refs

The merge of feat/extension-validate brought in the LfxCompat / compat
rename, but the loader test fixtures still used LangflowCompat / bundle_api
and failed at the manifest layer. Update conftest.py + test_load_extension.py
to the post-rename API.

Strip 17 LE-XXXX ticket references from loader source files, errors.py
loader-specific comments, and the four loader test docstrings, matching the
convention applied to LE-1014. Descriptive prose preserved.

Promote _BUNDLE_NAME_RE to BUNDLE_NAME_RE on the manifest module so the
loader's orchestrator no longer reaches across modules into a private name.

src/lfx/src/lfx/extension/errors.py

@@ -57,16 +57,17 @@ ERROR_CODES: frozenset[str] = frozenset(
         "import-star-disallowed",
         "top-level-io-disallowed",
         "execute-imports-failed",
-        # Loader-specific codes (LE-1015)
+        # Loader-specific codes
         "module-import-failed",
         "duplicate-component-name",
         "duplicate-inline-bundle",
         "inline-bundle-name-invalid",
     }
 )
-# NOTE: ``duplicate-distribution`` will be added by LE-1022 (installed-pkg
-# discovery) once there is a startup flow + events surface that can actually
-# emit it.  We hold the line that every registered code must have a producer.
+# NOTE: ``duplicate-distribution`` will be added with the installed-package
+# discovery flow once there is a startup path + events surface that can
+# actually emit it.  We hold the line that every registered code must have a
+# producer.
 
 
 # ---------------------------------------------------------------------------

src/lfx/src/lfx/extension/loader/__init__.py

@@ -1,4 +1,4 @@
-"""Single-Bundle loader for the Langflow Extension System (LE-1015).
+"""Single-Bundle loader for the Langflow Extension System.
 
 This package turns a directory tree on disk (an Extension or a loose
 LANGFLOW_COMPONENTS_PATH entry) into a list of :class:`LoadedComponent`
@@ -45,11 +45,11 @@ Internal layout (all underscore-prefixed; not part of the public surface):
     - ``_plugins``     -- manifest-first precedence over ``langflow.plugins``;
                           installed-distribution discovery primitives.
 
-LE-1022 will reuse ``_plugins.installed_extension_roots`` for the read-only
-@official slot at server startup; LE-1018 will reuse ``_orchestrator`` plus
-the discovery layer to drive atomic-swap reload.  Splitting the loader into
-small files now keeps each follow-on ticket touching one banner-section at
-a time.
+A future installed-package / seed-dir discovery flow will reuse
+``_plugins.installed_extension_roots`` for the read-only @official slot at
+server startup, and atomic-swap reload will reuse ``_orchestrator`` plus the
+discovery layer.  Splitting the loader into small files now keeps each
+follow-on touching one banner-section at a time.
 """
 
 from lfx.extension.loader._orchestrator import (

src/lfx/src/lfx/extension/loader/_detection.py

@@ -1,4 +1,4 @@
-"""Component-subclass detection for the extension loader (LE-1015).
+"""Component-subclass detection for the extension loader.
 
 After ``_discovery`` imports a bundle module, this module is responsible
 for picking the Component subclasses out of the resulting namespace.  The

src/lfx/src/lfx/extension/loader/_discovery.py

@@ -1,4 +1,4 @@
-"""Filesystem walk + module import for the extension loader (LE-1015).
+"""Filesystem walk + module import for the extension loader.
 
 This module owns the "find files / build module names / actually import"
 half of the loader pipeline.  It deliberately knows nothing about Component

src/lfx/src/lfx/extension/loader/_orchestrator.py

@@ -1,4 +1,4 @@
-"""Load orchestration: turn a directory tree into a :class:`LoadResult` (LE-1015).
+"""Load orchestration: turn a directory tree into a :class:`LoadResult`.
 
 This module wires the discovery + detection layers together and exposes the
 two public entry points the rest of Langflow consumes:
@@ -37,7 +37,7 @@ from lfx.extension.loader._types import (
     LoadResult,
 )
 from lfx.extension.manifest import (
-    _BUNDLE_NAME_RE,
+    BUNDLE_NAME_RE,
     BundleRef,
     ExtensionManifest,
     load_manifest,
@@ -306,7 +306,7 @@ def load_extension(
 
 # Inline-bundle metadata, optionally provided as ``bundle.json`` at the
 # bundle's root.  Only ``version`` is read in v0; ``name`` is derived from
-# the directory name and validated against _BUNDLE_NAME_RE so that the
+# the directory name and validated against BUNDLE_NAME_RE so that the
 # namespaced ID is well-formed.  This is intentionally a tiny shape; full
 # manifest support belongs at the @official slot.
 _INLINE_BUNDLE_DEFAULT_VERSION = "0.0.0"
@@ -382,7 +382,7 @@ def discover_inline_bundles(
                 continue
             result = LoadResult(slot=SLOT_EXTRA, source_path=child)
 
-            if not _BUNDLE_NAME_RE.match(name):
+            if not BUNDLE_NAME_RE.match(name):
                 result.errors.append(
                     ExtensionError(
                         code="inline-bundle-name-invalid",

src/lfx/src/lfx/extension/loader/_plugins.py

@@ -1,4 +1,4 @@
-"""Manifest-first precedence over ``langflow.plugins`` entry-points (LE-1015).
+"""Manifest-first precedence over ``langflow.plugins`` entry-points.
 
 This is the bridge between the new manifest-based loader and the legacy
 ``langflow.plugins`` entry-point system that third parties already use to
@@ -9,9 +9,9 @@ to avoid double registration.  Non-component entry-points (services,
 routes) on the same distribution are unaffected -- the caller's loop is
 responsible for that distinction.
 
-LE-1022 will use the same primitives at server startup to drive the
-read-only @official slot (installed-package + seed-dir discovery).  The
-helpers live in their own module so that downstream module gets a stable
+The installed-package / seed-dir discovery flow consumes the same
+primitives at server startup to drive the read-only @official slot.  The
+helpers live in their own module so that downstream consumer gets a stable
 import surface to reach for.
 """
 
@@ -114,9 +114,9 @@ def installed_extension_roots(
 
     # Two distributions with the same canonical name (rare but possible in
     # broken venvs) are resolved by keeping the lexicographically-first
-    # manifest path for determinism.  LE-1022 will surface the conflict as
-    # a typed warning when it owns the startup-time discovery flow; in this
-    # primitive we only return the resolved mapping, never an error.
+    # manifest path for determinism.  The startup-time discovery flow will
+    # surface the conflict as a typed warning when it lands; this primitive
+    # only returns the resolved mapping, never an error.
     found: dict[str, tuple[Path, str]] = {}
     for dist in distributions:
         manifest_path = _distribution_manifest_path(dist)

src/lfx/src/lfx/extension/loader/_types.py

@@ -1,4 +1,4 @@
-"""Public dataclasses and slot constants for the extension loader (LE-1015).
+"""Public dataclasses and slot constants for the extension loader.
 
 Kept module-level so consumers (events pipeline, registry, tests) can import
 them without paying the cost of dragging in the discovery / detection /
@@ -41,10 +41,10 @@ class LoadedComponent:
     """A successfully loaded Component class plus its registry coordinates.
 
     Frozen so callers can place these in sets / dicts and emit them across
-    the events pipeline (LE-1017) without worrying about mutation.
+    the events pipeline without worrying about mutation.
 
     The :attr:`namespaced_id` is the canonical address used by saved flows
-    after the migration table (LE-1020) rewrites legacy references.
+    after the migration table rewrites legacy references.
     """
 
     extension_id: str

src/lfx/src/lfx/extension/manifest.py

@@ -82,7 +82,7 @@ _EXTENSION_ID_RE: re.Pattern[str] = re.compile(r"^[a-z][a-z0-9-]{1,63}$")
 """Extension IDs are lowercase, hyphenated, must start with a letter, 2-64 chars.
 Mirrors the npm-package / PyPI normalization rules."""
 
-_BUNDLE_NAME_RE: re.Pattern[str] = re.compile(r"^[a-z][a-z0-9_]{1,63}$")
+BUNDLE_NAME_RE: re.Pattern[str] = re.compile(r"^[a-z][a-z0-9_]{1,63}$")
 """Bundle names use snake_case so they can be addressed in the registry as
 ``ext:<bundle>:<Class>@<slot>`` without quoting."""
 
@@ -191,7 +191,7 @@ class BundleRef(BaseModel):
 
     name: StrictStr = Field(
         ...,
-        pattern=_BUNDLE_NAME_RE.pattern,
+        pattern=BUNDLE_NAME_RE.pattern,
         description=(
             "Bundle name; addressable as ext:<name>:<Class>@<slot>. "
             "Lowercase snake_case, starting with a letter, 2-64 chars."

src/lfx/tests/unit/extension/loader/conftest.py

@@ -27,7 +27,7 @@ _BASE_MANIFEST: dict = {
     "id": "lfx-pilot",
     "version": "1.2.3",
     "name": "Pilot Bundle",
-    "lfx": {"bundle_api": [1]},
+    "lfx": {"compat": ["1"]},
     "bundles": [{"name": "pilot", "path": "components"}],
 }
 
@@ -133,7 +133,7 @@ def make_installed_extension(parent: Path, distribution_name: str) -> FakeDist:
         "id": distribution_name,
         "version": "1.0.0",
         "name": distribution_name,
-        "lfx": {"bundle_api": [1]},
+        "lfx": {"compat": ["1"]},
         "bundles": [{"name": distribution_name.replace("-", "_"), "path": "components"}],
     }
     manifest_file = pkg_dir / "extension.json"

src/lfx/tests/unit/extension/loader/test_inline_bundles.py

@@ -1,4 +1,4 @@
-"""Tests for ``discover_inline_bundles`` (LANGFLOW_COMPONENTS_PATH; LE-1015).
+"""Tests for ``discover_inline_bundles`` (LANGFLOW_COMPONENTS_PATH).
 
 Covers the @extra-slot AC items:
     - each immediate subfolder of every path is one Bundle

src/lfx/tests/unit/extension/loader/test_load_extension.py

@@ -1,4 +1,4 @@
-"""Tests for ``load_extension`` -- happy path and failure modes (LE-1015).
+"""Tests for ``load_extension`` -- happy path and failure modes.
 
 Covers the AC items for the @official slot:
     - single-Bundle happy path + identity tuple population
@@ -121,7 +121,7 @@ def test_runtime_multi_bundle_check(tmp_path: Path, monkeypatch: pytest.MonkeyPa
     from lfx.extension.manifest import (
         BundleRef,
         ExtensionManifest,
-        LangflowCompat,
+        LfxCompat,
         ManifestSource,
     )
 
@@ -136,7 +136,7 @@ def test_runtime_multi_bundle_check(tmp_path: Path, monkeypatch: pytest.MonkeyPa
         id="lfx-pilot",
         version="1.2.3",
         name="Pilot",
-        lfx=LangflowCompat(bundle_api=[1]),
+        lfx=LfxCompat(compat=["1"]),
         bundles=[BundleRef(name="alpha", path="alpha"), BundleRef(name="bravo", path="bravo")],
     )
     source = ManifestSource.model_construct(manifest=forged, path=tmp_path / "extension.json", kind="extension.json")

src/lfx/tests/unit/extension/loader/test_plugins.py

@@ -1,4 +1,4 @@
-"""Tests for manifest-first precedence over ``langflow.plugins`` (LE-1015).
+"""Tests for manifest-first precedence over ``langflow.plugins``.
 
 Covers the AC item: "package with manifest + legacy component entry-point
 loads its components ONCE via the manifest, not twice."  We model "loaded

src/lfx/tests/unit/extension/loader/test_types.py

@@ -1,4 +1,4 @@
-"""Tests for the loader's public dataclasses (LE-1015).
+"""Tests for the loader's public dataclasses.
 
 ``LoadedComponent`` and ``LoadResult`` are the values the rest of the
 Langflow stack consumes (events pipeline, registry, future reload).