bggpipe web: the whole pipeline as a local web app

A dashboard at / joins the review page (now at /review): drag-and-drop
photo upload (re-uploading a photo drops its raw cache so extract
re-reads it), per-stage status cards fed by /api/pipeline (counts and
key NAMES only — never values), and run buttons that execute stages
one-at-a-time in a background JobRunner with captured output streamed
to the page. The real upload sits behind a confirmation, defaults to
dry-run at the API layer, and stays disabled while stub data is
present. The CLI is unchanged and shares all state with the web UI.
python-multipart joins the deps for the upload endpoint; RunBody lives
at module scope because postponed annotations keep FastAPI from
resolving function-local models.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

uv.lock

@@ -64,6 +64,7 @@ dependencies = [
     { name = "pillow-heif" },
     { name = "playwright" },
     { name = "pydantic" },
+    { name = "python-multipart" },
     { name = "rapidfuzz" },
     { name = "rich" },
     { name = "typer" },
@@ -86,6 +87,7 @@ requires-dist = [
     { name = "pillow-heif", specifier = ">=1.5.0" },
     { name = "playwright", specifier = ">=1.62.0" },
     { name = "pydantic", specifier = ">=2.13.4" },
+    { name = "python-multipart", specifier = ">=0.0.32" },
     { name = "rapidfuzz", specifier = ">=3.9" },
     { name = "rich", specifier = ">=15.0.0" },
     { name = "typer", specifier = ">=0.12" },
@@ -660,6 +662,15 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/24/25/1de2678b631f5a49215c6c96fff41ba892b0a34df68d6d80292b1b48aa7f/pytest-9.1.1-py3-none-any.whl", hash = "sha256:37a86b45efb9a47a61a36449063e8e18d0cab3161329fc099eb21783169c4f0c", size = 386536, upload-time = "2026-06-19T10:58:31.347Z" },
 ]
 
+[[package]]
+name = "python-multipart"
+version = "0.0.32"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/5b/42/55c32bb9b12693c092ad250a0e82edb5b31ddeda6eb772de5f308b3804ad/python_multipart-0.0.32.tar.gz", hash = "sha256:be54b7f3fa167bb83e4fcd936b887b708f4e57fe75911c02aebf53efaf8d938e", size = 46881, upload-time = "2026-06-04T16:18:58.647Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/e1/04/e8135ebd1ad02c56ec633277529b2602ff99ff634be76cdba5744cf554fd/python_multipart-0.0.32-py3-none-any.whl", hash = "sha256:ff6d3f776f16878c894e52e107296ffc890e913c611b1a4ec6c44e2821fe2e23", size = 30042, upload-time = "2026-06-04T16:18:57.319Z" },
+]
+
 [[package]]
 name = "rapidfuzz"
 version = "3.14.5"