T3 Code Nightly 0.0.39-nightly.20260906.1291 (bd16b86d50c1)

What's Changed

• feat(server): report image dimensions with signed asset URLs by @juliusmarminge in #10198
• fix(mobile): size a chat image's frame before its bytes arrive by @juliusmarminge in #10199
• fix(web): size the chat image slot from server-reported dimensions by @juliusmarminge in #10200
• refactor(shared): remove unused runtime helpers and exports by @juliusmarminge in #10166
• refactor(client-runtime): remove unused runtime exports and helpers by @juliusmarminge in #10167
• refactor(contracts): keep RPC implementation exports private by @juliusmarminge in #10168
• refactor(contracts): trim unused client API runtime exports by @juliusmarminge in #10169
• refactor(contracts): keep unused settings and relay exports private by @juliusmarminge in #10170
• ci: enforce runtime exports while allowing types and schemas by @juliusmarminge in #10171
• fix(web): copy provider update commands from compact rows by @MatthewFeroz in #9888
• fix(web): align provider header action sizes and spacing by @MatthewFeroz in #9890
• fix(mobile): restore live tool shimmer and add a Thinking row by @juliusmarminge in #10173
• fix(mobile): even out the working pill's spacing by @juliusmarminge in #10209
• fix(mobile): only make work rows expandable when the body adds something by @juliusmarminge in #10210
• fix(mobile): fold subagent lifecycle rows into one batch per spawn by @juliusmarminge in #10211
• fix(mobile): stop clipping expanded tool groups by @juliusmarminge in #10212
• fix(web): defer browser discovery in integrations by @zortos293 in #9797
• refactor(web): test file cache identity through its public helpers by @juliusmarminge in #10219
• refactor(web): test favicon fallback through the component by @juliusmarminge in #10220
• feat: show provider usage limits with /usage-limits by @chrisdeeming in #9875
• refactor(web): test formatted timestamps instead of formatter options by @juliusmarminge in #10221
• feat(usage): show remaining quota instead of used by @chrisdeeming in #9889
• fix(ui): unify loading and refresh feedback across clients by @StiensWout in #9561
• fix(client-runtime): report terminated thread loads by @juliusmarminge in #10216

Full Changelog: v0.0.39-nightly.20260905.1290...v0.0.39-nightly.20260906.1291