diff --git a/esphome/arduino/library.py b/esphome/arduino/library.py
index a5d4a6f515..5ed263eee6 100644
--- a/esphome/arduino/library.py
+++ b/esphome/arduino/library.py
@@ -195,7 +195,6 @@ def _collect_lib_sources(
     name: str,
     read_path: Path,
     lib: ArduinoLibrary,
-    build: dict,
     src_dir: str,
     src_filter: list[str],
 ) -> None:
@@ -246,7 +245,7 @@ def _library_info(name: str, read_path: Path, data: dict) -> ArduinoLibrary:
         name, read_path, lib, lex_build_flags(build.get("flags", []), f"library {name}")
     )
     _resolve_include_dirs(name, read_path, lib, build, src_dir, include_flags)
-    _collect_lib_sources(name, read_path, lib, build, src_dir, src_filter)
+    _collect_lib_sources(name, read_path, lib, src_dir, src_filter)
     return lib
 
 
@@ -306,12 +305,16 @@ def _external_short_name(name: str) -> str:
 
     "owner/Name" and plain names take the last path segment; the
     "Name=<url>" custom-name form takes the declared name (the URL tail is
-    a repository path, not a library name).
+    a repository path, not a library name). Git tails (".git", "#ref") are
+    stripped like the walk's own URL normalization -- deliberately further
+    than CORE.add_library's keying, because the comparand here is a manifest
+    dependency name, never a spec.
     """
     head, sep, tail = name.partition("=")
     if sep and "://" in tail:
         return head
-    return name.rsplit("/", maxsplit=1)[-1]
+    short = name.rsplit("/", maxsplit=1)[-1]
+    return short.partition("#")[0].removesuffix(".git")
 
 
 def resolve_libraries(
@@ -470,10 +473,13 @@ def resolve_libraries(
         )
     for name in pending_bundled:
         if name in converted_manifest_names:
-            # Exact manifest-name evidence: the converted library is this
-            # library, so the bundled copy would double the archive
-            _LOGGER.debug(
-                "Bundled %s suppressed by a converted library's manifest name",
+            # Manifest-name evidence: the converted library is this library,
+            # so the bundled copy would double the archive. Warn like the
+            # external_short_names twin: a coincidental collision would
+            # otherwise surface only as link errors
+            _LOGGER.warning(
+                "Dependency %s is assumed satisfied by a converted library's "
+                "manifest name; the bundled copy is not added",
                 name,
             )
             continue
diff --git a/esphome/platformio/library.py b/esphome/platformio/library.py
index e3a16c3dd9..c39ddeedef 100644
--- a/esphome/platformio/library.py
+++ b/esphome/platformio/library.py
@@ -923,6 +923,13 @@ def _warn_unsatisfied_versionless(
             # A version-less dep's request key is the name itself
             continue
         if dep_name in resolved_manifest_names:
+            # Name-only evidence: any resolved component with this manifest
+            # name counts, not just ones the requester can reach
+            _LOGGER.debug(
+                "Version-less dependency %s of %s satisfied by manifest name only",
+                dep_name,
+                requester,
+            )
             continue
         if (
             not dep_owner
diff --git a/tests/unit_tests/test_arduino_library.py b/tests/unit_tests/test_arduino_library.py
index 9a349c2ea6..f2264db3ac 100644
--- a/tests/unit_tests/test_arduino_library.py
+++ b/tests/unit_tests/test_arduino_library.py
@@ -984,6 +984,9 @@ def test_transitively_resolved_dependency_does_not_warn(
         # An "=" without a URL is a registry name, not the custom-name form
         ("FOO=BAR", "FOO=BAR"),
         ("https://github.com/x/Wire", "Wire"),
+        # Git tails are stripped like the walk's URL normalization
+        ("https://github.com/x/Wire.git", "Wire"),
+        ("git+https://github.com/x/Wire.git#v1", "Wire"),
     ],
 )
 def test_external_short_name(spec: str, expected: str) -> None:
@@ -991,10 +994,11 @@ def test_external_short_name(spec: str, expected: str) -> None:
 
 
 def test_converted_manifest_name_suppresses_bundled_dependency(
-    tmp_path: Path,
+    tmp_path: Path, caplog: pytest.LogCaptureFixture
 ) -> None:
     """A name a converted library's manifest provides is not also added
-    from the framework tree, even when the provider emits later."""
+    from the framework tree, even when the provider emits later; the
+    suppression warns like its external_short_names twin."""
     framework = _make_framework(tmp_path)
     _add_library("ESP32Async/ESPAsyncWebServer", "3.9.6")
     # Requested under a different short name; only the manifest says "Wire"
@@ -1020,6 +1024,7 @@ def test_converted_manifest_name_suppresses_bundled_dependency(
         "esp32async__ESPAsyncWebServer",
         "someone__WireLib",
     ]
+    assert "Dependency Wire is assumed satisfied by a converted" in caplog.text
 
 
 def test_bundled_library_root_headers_pass_the_probe(tmp_path: Path) -> None: