build(deps): bump the actions group across 1 directory with 6 updates

Bumps the actions group with 6 updates in the / directory:

| Package | From | To |
| --- | --- | --- |
| [actions/setup-python](https://github.com/actions/setup-python) | `6.2.0` | `6.3.0` |
| [docker/setup-buildx-action](https://github.com/docker/setup-buildx-action) | `4.1.0` | `4.2.0` |
| [docker/build-push-action](https://github.com/docker/build-push-action) | `7.2.0` | `7.3.0` |
| [github/codeql-action/upload-sarif](https://github.com/github/codeql-action) | `4.36.2` | `4.37.0` |
| [docker/login-action](https://github.com/docker/login-action) | `4.2.0` | `4.4.0` |
| [docker/metadata-action](https://github.com/docker/metadata-action) | `6.1.0` | `6.2.0` |



Updates `actions/setup-python` from 6.2.0 to 6.3.0
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](https://github.com/actions/setup-python/compare/a309ff8b426b58ec0e2a45f0f869d46889d02405...ece7cb06caefa5fff74198d8649806c4678c61a1)

Updates `docker/setup-buildx-action` from 4.1.0 to 4.2.0
- [Release notes](https://github.com/docker/setup-buildx-action/releases)
- [Commits](https://github.com/docker/setup-buildx-action/compare/d7f5e7f509e45cec5c76c4d5afdd7de93d0b3df5...bb05f3f5519dd87d3ba754cc423b652a5edd6d2c)

Updates `docker/build-push-action` from 7.2.0 to 7.3.0
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](https://github.com/docker/build-push-action/compare/f9f3042f7e2789586610d6e8b85c8f03e5195baf...53b7df96c91f9c12dcc8a07bcb9ccacbed38856a)

Updates `github/codeql-action/upload-sarif` from 4.36.2 to 4.37.0
- [Release notes](https://github.com/github/codeql-action/releases)
- [Changelog](https://github.com/github/codeql-action/blob/main/CHANGELOG.md)
- [Commits](https://github.com/github/codeql-action/compare/8aad20d150bbac5944a9f9d289da16a4b0d87c1e...99df26d4f13ea111d4ec1a7dddef6063f76b97e9)

Updates `docker/login-action` from 4.2.0 to 4.4.0
- [Release notes](https://github.com/docker/login-action/releases)
- [Commits](https://github.com/docker/login-action/compare/650006c6eb7dba73a995cc03b0b2d7f5ca915bee...af1e73f918a031802d376d3c8bbc3fe56130a9b0)

Updates `docker/metadata-action` from 6.1.0 to 6.2.0
- [Release notes](https://github.com/docker/metadata-action/releases)
- [Commits](https://github.com/docker/metadata-action/compare/80c7e94dd9b9319bd5eb7a0e0fe9291e23a2a2e9...dc802804100637a589fabce1cb79ff13a1411302)

---
updated-dependencies:
- dependency-name: actions/setup-python
  dependency-version: 6.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: actions
- dependency-name: docker/build-push-action
  dependency-version: 7.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: actions
- dependency-name: docker/login-action
  dependency-version: 4.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: actions
- dependency-name: docker/metadata-action
  dependency-version: 6.2.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: actions
- dependency-name: docker/setup-buildx-action
  dependency-version: 4.2.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: actions
- dependency-name: github/codeql-action/upload-sarif
  dependency-version: 4.36.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: actions
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/ci.yml

@@ -76,7 +76,7 @@ jobs:
       - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0  # v7.0.0
         with:
           persist-credentials: false
-      - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405  # v6.2.0
+      - uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1  # v6.3.0
         with:
           python-version: "3.11"
       # Byte-compile sources — catches syntax errors without installing deps.
@@ -135,7 +135,7 @@ jobs:
             echo "docs_only=false" >> "$GITHUB_OUTPUT"
           fi
 
-      - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405  # v6.2.0
+      - uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1  # v6.3.0
         if: steps.docs-check.outputs.docs_only != 'true'
         with:
           python-version: "3.11"

.github/workflows/container-trivy.yml

@@ -57,12 +57,12 @@ jobs:
           persist-credentials: false
 
       - name: Set up Buildx
-        uses: docker/setup-buildx-action@d7f5e7f509e45cec5c76c4d5afdd7de93d0b3df5  # v4.1.0
+        uses: docker/setup-buildx-action@bb05f3f5519dd87d3ba754cc423b652a5edd6d2c  # v4.2.0
 
       # Build without pushing so a broken Dockerfile is caught here, and the
       # exact image we ship is what gets scanned.
       - name: Build image
-        uses: docker/build-push-action@f9f3042f7e2789586610d6e8b85c8f03e5195baf  # v7.2.0
+        uses: docker/build-push-action@53b7df96c91f9c12dcc8a07bcb9ccacbed38856a  # v7.3.0
         with:
           context: .
           push: false
@@ -98,10 +98,10 @@ jobs:
           persist-credentials: false
 
       - name: Set up Buildx
-        uses: docker/setup-buildx-action@d7f5e7f509e45cec5c76c4d5afdd7de93d0b3df5  # v4.1.0
+        uses: docker/setup-buildx-action@bb05f3f5519dd87d3ba754cc423b652a5edd6d2c  # v4.2.0
 
       - name: Build image
-        uses: docker/build-push-action@f9f3042f7e2789586610d6e8b85c8f03e5195baf  # v7.2.0
+        uses: docker/build-push-action@53b7df96c91f9c12dcc8a07bcb9ccacbed38856a  # v7.3.0
         with:
           context: .
           push: false
@@ -119,7 +119,7 @@ jobs:
           TRIVY_DB_REPOSITORY: ghcr.io/aquasecurity/trivy-db:2
 
       - name: Upload Trivy results
-        uses: github/codeql-action/upload-sarif@8aad20d150bbac5944a9f9d289da16a4b0d87c1e  # v4.36.2
+        uses: github/codeql-action/upload-sarif@99df26d4f13ea111d4ec1a7dddef6063f76b97e9  # v4.37.0
         with:
           sarif_file: trivy-results.sarif
           category: trivy-image

.github/workflows/dependency-review.yml

@@ -60,7 +60,7 @@ jobs:
           persist-credentials: false
 
       - name: Set up Python
-        uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405  # v6.2.0
+        uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1  # v6.3.0
         with:
           python-version: '3.12'
 

.github/workflows/docker-publish.yml

@@ -49,16 +49,16 @@ jobs:
         with:
           persist-credentials: false
       - name: Set up Buildx
-        uses: docker/setup-buildx-action@d7f5e7f509e45cec5c76c4d5afdd7de93d0b3df5  # v4.1.0
+        uses: docker/setup-buildx-action@bb05f3f5519dd87d3ba754cc423b652a5edd6d2c  # v4.2.0
       - name: Log in to GHCR
-        uses: docker/login-action@650006c6eb7dba73a995cc03b0b2d7f5ca915bee  # v4.2.0
+        uses: docker/login-action@af1e73f918a031802d376d3c8bbc3fe56130a9b0  # v4.4.0
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
       - name: Build and push by digest
         id: build
-        uses: docker/build-push-action@f9f3042f7e2789586610d6e8b85c8f03e5195baf  # v7.2.0
+        uses: docker/build-push-action@53b7df96c91f9c12dcc8a07bcb9ccacbed38856a  # v7.3.0
         with:
           context: .
           platforms: ${{ matrix.platform }}
@@ -103,16 +103,16 @@ jobs:
           pattern: digest-*
           merge-multiple: true
       - name: Set up Buildx
-        uses: docker/setup-buildx-action@d7f5e7f509e45cec5c76c4d5afdd7de93d0b3df5  # v4.1.0
+        uses: docker/setup-buildx-action@bb05f3f5519dd87d3ba754cc423b652a5edd6d2c  # v4.2.0
       - name: Log in to GHCR
-        uses: docker/login-action@650006c6eb7dba73a995cc03b0b2d7f5ca915bee  # v4.2.0
+        uses: docker/login-action@af1e73f918a031802d376d3c8bbc3fe56130a9b0  # v4.4.0
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
       - name: Compute tags
         id: meta
-        uses: docker/metadata-action@80c7e94dd9b9319bd5eb7a0e0fe9291e23a2a2e9  # v6.1.0
+        uses: docker/metadata-action@dc802804100637a589fabce1cb79ff13a1411302  # v6.2.0
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
           tags: |

.github/workflows/workflow-security.yml

@@ -66,7 +66,7 @@ jobs:
           persist-credentials: false
 
       - name: Set up Python
-        uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405  # v6.2.0
+        uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1  # v6.3.0
         with:
           python-version: '3.12'
 

src/constants.py

@@ -4,7 +4,7 @@ import os
 
 from src.runtime_paths import get_app_root, get_default_data_dir
 
-APP_VERSION = "1.0.2"
+APP_VERSION = "1.0.1"
 
 # Base paths
 BASE_DIR = os.path.join(get_app_root(), "")

src/copilot.py

@@ -230,7 +230,10 @@ def request_flags(messages) -> tuple:
     """
     msgs = messages or []
     last = msgs[-1] if msgs else None
-    agent = bool(last) and last.get("role") != "user"
+    # A message element can be a non-dict (clients send `"messages": ["hi"]`);
+    # the vision loop below already guards each element with isinstance, so do
+    # the same here rather than call .get() on a bare string.
+    agent = isinstance(last, dict) and last.get("role") != "user"
     vision = False
     for m in msgs:
         content = m.get("content") if isinstance(m, dict) else None

src/document_processor.py

@@ -440,7 +440,10 @@ def build_user_content(
             try:
                 with open(path, "rb") as image_file:
                     encoded_string = base64.b64encode(image_file.read()).decode("utf-8")
-                image_format = ext[1:]
+                # Extensionless uploads (e.g. a pasted screenshot) have no ext,
+                # so fall back to the resolved MIME subtype rather than emitting
+                # an invalid "data:image/;base64," with an empty subtype.
+                image_format = ext[1:] or (mime.split("/", 1)[1] if mime.startswith("image/") else "png")
                 content.append({
                     "type": "image_url",
                     "image_url": {"url": f"data:image/{image_format};base64,{encoded_string}"},
@@ -456,7 +459,7 @@ def build_user_content(
             try:
                 with open(path, "rb") as audio_file:
                     encoded_string = base64.b64encode(audio_file.read()).decode("utf-8")
-                audio_format = ext[1:]
+                audio_format = ext[1:] or (mime.split("/", 1)[1] if mime.startswith("audio/") else "mpeg")
                 content.append({
                     "type": "audio",
                     "audio": {"url": f"data:audio/{audio_format};base64,{encoded_string}"},

tests/test_copilot.py

@@ -89,6 +89,18 @@ def test_request_flags_vision():
     assert vision is True
 
 
+def test_request_flags_non_dict_last_message_does_not_crash():
+    # A client can send a bare-string (non-dict) last element; before the
+    # isinstance guard this raised AttributeError on last.get("role").
+    assert copilot.request_flags(["hi"]) == (False, False)
+    assert copilot.request_flags([{"role": "user"}, "trailing"]) == (False, False)
+
+
+def test_request_flags_empty_and_none():
+    assert copilot.request_flags([]) == (False, False)
+    assert copilot.request_flags(None) == (False, False)
+
+
 def test_apply_request_headers_mutates():
     h = {"X-GitHub-Api-Version": "v"}
     copilot.apply_request_headers(h, [{"role": "tool", "content": "x"}])

tests/test_document_processor_empty_media_subtype.py

@@ -0,0 +1,74 @@
+"""Regression: extensionless image/audio uploads must get a valid MIME subtype.
+
+The data-URL subtype was derived only from the stored file's extension
+(`image_format = ext[1:]`). A pasted screenshot or any file whose stored id
+carries no extension yields `ext == ""`, so the emitted URL was
+`data:image/;base64,...` — an empty MIME subtype (invalid per RFC 2046) that
+vision/audio endpoints reject, silently dropping the attachment. When the
+extension is missing, fall back to the resolved MIME subtype. Extensions that
+are present are unchanged.
+"""
+
+
+class _Handler:
+    def __init__(self, uploads, image=False, audio=False):
+        self.uploads = uploads
+        self._image = image
+        self._audio = audio
+
+    def resolve_upload(self, fid, owner=None):
+        return self.uploads.get(fid)
+
+    def _inside_upload_dir(self, path):
+        return True
+
+    def is_image_file(self, name, mime):
+        return self._image and (mime or "").startswith("image/")
+
+    def is_audio_file(self, name, mime):
+        return self._audio and (mime or "").startswith("audio/")
+
+    def is_document_file(self, name, mime):
+        return False
+
+
+def _blocks(content, block_type):
+    return [b for b in content if isinstance(b, dict) and b.get("type") == block_type]
+
+
+def test_extensionless_image_uses_mime_subtype(tmp_path):
+    import src.document_processor as dp
+
+    p = tmp_path / ("a" * 32)          # bare id, no extension
+    p.write_bytes(b"\x89PNG\r\n\x1a\nfake")
+    uploads = {"img": {"path": str(p), "name": "screenshot", "mime": "image/png"}}
+
+    content = dp.build_user_content("look", ["img"], str(tmp_path), _Handler(uploads, image=True), owner="t")
+    imgs = _blocks(content, "image_url")
+    assert imgs, content
+    assert imgs[0]["image_url"]["url"].startswith("data:image/png;base64,")
+
+
+def test_extensionless_audio_uses_mime_subtype(tmp_path):
+    import src.document_processor as dp
+
+    p = tmp_path / ("b" * 32)
+    p.write_bytes(b"fakeaudio")
+    uploads = {"aud": {"path": str(p), "name": "recording", "mime": "audio/mpeg"}}
+
+    content = dp.build_user_content("listen", ["aud"], str(tmp_path), _Handler(uploads, audio=True), owner="t")
+    auds = _blocks(content, "audio")
+    assert auds, content
+    assert auds[0]["audio"]["url"].startswith("data:audio/mpeg;base64,")
+
+
+def test_extension_present_is_unchanged(tmp_path):
+    import src.document_processor as dp
+
+    p = tmp_path / "pic.png"
+    p.write_bytes(b"\x89PNG\r\n\x1a\n")
+    uploads = {"img": {"path": str(p), "name": "pic.png", "mime": "image/png"}}
+
+    content = dp.build_user_content("look", ["img"], str(tmp_path), _Handler(uploads, image=True), owner="t")
+    imgs = _blocks(content, "image_url")
+    assert imgs[0]["image_url"]["url"].startswith("data:image/png;base64,")