v2026.9.6

What's Changed

• Pin core 0.1.2: show cancellations, partial failures and missing usage by @fylorn in #27
• fix(deps): raise rust-version to 1.88 to take time and serde_with fixes by @fylorn in #34
• feat(upstreams): rebuild the upstream page around dialogs, proxies and price sheets by @fylorn in #35
• feat(upstreams): request headers alongside the API key, as in the enterprise gateway by @fylorn in #38
• fix(copy): rewrite the strings the Rust side shows in a written register by @fylorn in #37
• fix(copy): rewrite the remaining UI copy in a written register by @fylorn in #36
• feat: pin core 0.4.0, and show format conversion in request details and the dry run by @fylorn in #39
• feat: sign in with a ChatGPT account, and spend reset credits on request by @fylorn in #40
• feat: a notification bus, so what matters is said once and only once by @fylorn in #41
• feat: choose per category whether a notice interrupts, and report unreachable upstreams by @fylorn in #42
• chore: 2026.9.6 by @fylorn in #43

Full Changelog: v2026.9.5...v2026.9.6