Merge upstream main into pr/street-level-show-action

Locale conflicts: main's catalogs plus the PR's 10 street-level strings.

changelog.d/1506-cctv-taiwan-quebec-ottawa-world.md

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+- Expand CCTV coverage with a keyless Taiwan Highway Bureau fallback, 1,120
+  Québec camera locations, City of Ottawa traffic cameras (needs a free city
+  access certificate, `OTTAWA_CAMERA_CERTIFICATE`), and 2,230 curated
+  image-backed cameras from Oregon and Japan (InoukT, #1506).
+- Québec 511 in-browser video is opt-in (`CCTV_QUEBEC_VIDEO_ENABLED=1`) and
+  loads only after the viewer presses Play; enforce provider-specific frame
+  refresh limits, and report recognized MLIT maintenance images as degraded
+  instead of healthy camera snapshots.

changelog.d/1578-space-missions-failed-entry.md

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+- Space Missions no longer locks the workspace when its mission index fails to
+  load (429, timeout or bad payload): entry rolls back to the previous layers
+  and camera view and a toast says the index could not load (German, @gekh,
+  #1578).

changelog.d/1609-traffic-lines-dots-toggles.md

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+- Street Traffic offers separate Lines and Dots toggles while live flow is on:
+  Lines draws each road with flow in green, amber or red, and Dots shows or
+  hides the moving dots. A host can choose which road modes it offers; without
+  OpenStreetMap the layer never draws simulated roads (#1609).

changelog.d/1616-openai-chat-tool-patterns.md

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+- Typed chat on OpenAI answers again: OpenAI refused every message because
+  `resolve_area`'s area-id pattern uses Unicode classes Chat Completions does
+  not accept. Chat leaves those patterns out; area ids are still checked
+  before the tool runs (samehkhamis, #1616).

changelog.d/1617-cctv-iceland.md

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+- Add Icelandic road cameras from the Icelandic Road and Coastal Administration
+  (Vegagerðin) as a CCTV pack. The camera list is one keyless JSON request to
+  `gagnaveita.vegagerdin.is/api/vefmyndavelar2014_1` (about 500 views at 166
+  stations); frames are JPEG stills in `www.vegagerdin.is/vgdata/vefmyndavelar/`,
+  and only links inside that directory are registered. The catalog is fetched
+  over https with redirects refused and a 2 MiB body cap. An explicit facing in
+  the view description ("til vesturs", "í suður", "séð austur") sets a
+  high-confidence heading; other views keep the low-confidence fallback pose.
+  IRCA publishes the images under CC BY 4.0, credited in the Data attribution
+  popover. Loads the 250 views nearest Reykjavík, Akureyri, Egilsstaðir,
+  Ísafjörður and Selfoss; `CCTV_ICELAND_MAX_SOURCES` changes that cap and
+  `CCTV_ICELAND_ENABLED=0` turns the pack off (daikaginza, #1617).

changelog.d/1619-giroc-camera-hls-segments.md

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+- Add an optional Giroc / Webcam Romania CCTV source pack with corrected
+  coordinates, live HLS, a snapshot fallback and provider attribution. Allow
+  HLS segments up to 8 MiB so high-resolution cameras whose segments exceed
+  4 MiB can play, while retaining the 24 MiB per-session cache and existing
+  origin and session limits (NeoXrated23, #1619).

changelog.d/1620-cctv-opening-camera.md

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+- Turning CCTV on opens the camera nearest you instead of the first camera in
+  the catalog, which showed a Sydney camera in London. A share link opens on
+  the camera nearest the shared view once its flight lands (samehkhamis, #1620).