The Responses client-tool restore raised an upstream function_call back to
custom_tool_call and tool_search_call without touching its item ID, so the
client received a custom_tool_call carrying the upstream's fc_ ID. That
combination is invalid: once the item lands in the client's history, any
later replay to an upstream that validates item IDs fails the whole request
with "Invalid 'input[N].id': 'fc_...'. Expected an ID that begins with
'ctc'", and every following message re-submits the same bad item.
Re-prefix the ID to match the type it is raised to, keeping the suffix so
the ID stays stable and unique per upstream item. IDs without a known
tool-call prefix are left alone rather than guessed at.
The lowering direction has to reverse this, because the WebSocket HTTP
bridge replays restored items back to the upstream and would otherwise lose
the upstream's own ID. normalizeLoweredFunctionItemID now maps a ctc_/tsc_
call ID back to fc_ instead of dropping it, which makes the round trip
lossless; output item IDs (ctco_/tso_) still have no function-protocol
counterpart and are still dropped. The helper was renamed from
dropInvalidLoweredFunctionItemID to match what it now does.
The stream restorer keeps the upstream ID for its own bookkeeping so later
upstream events still match the call, and emits the client-facing ID on
output_item.added/done and the custom_tool_call_input events.
Closes#6071
Account model mappings decide availability, but generated Codex catalogs previously inferred capabilities from local model-name tables. Compatible upstreams can expose unknown models such as OpenCode x-preview-f-free, so reasoning levels, image input, and context limits were missing or wrong.
Sync capability metadata from the account model endpoint, enrich incomplete lists from the Models.dev provider matching the account base URL, and persist only complete snapshots. Mixed groups consume the safe intersection across schedulable accounts. When IDs sync without complete metadata, return an explicit warning and preserve the previous snapshot.
Third-party Responses providers often omit /models. If that endpoint returns 404 or 405 and the account already has concrete model mappings, use those configured upstream IDs for capability enrichment. Authentication, rate-limit, server, and network failures remain hard errors, and metadata is never guessed across providers by model name alone.
Advertise a single none choice for non-reasoning models so current Codex can select them, then omit that catalog placeholder when forwarding to compatible Responses upstreams while preserving official OpenAI request semantics.
The admin user edit modal rejected concurrency < 1, so a user whose
concurrency is already 0 could not be saved at all — the guard runs
before the request, blocking notes, password, role and RPM edits on that
user too.
Everywhere else already treats 0 as unlimited: the gateway skips slot
limiting when maxConcurrency <= 0 (ConcurrencyService.AcquireUserSlot),
the batch limits endpoint binds concurrency with min=0, and the bulk edit
modal only rejects negative values.
Reject negative and non-integer values instead, mirror the RPM field with
min/step and a "0 = unlimited" placeholder and hint, and rename the error
key to match its new meaning. Account concurrency is unchanged.
The quick-add parser rejected every IPv6 proxy: the host group [^:]+
cannot match IPv6 literals (colons) and the pattern had no bracketed
form, so lines like socks5://[2001:db8::1]:1080 were reported invalid.
Add a bracketed-IPv6 host alternative and strip the brackets before
storing; the backend re-brackets via net.JoinHostPort when building the
proxy URL. Bare (unbracketed) IPv6 stays rejected because it is
ambiguous with host:port. Also add a regression test.
OpenAI groups can mix OAuth accounts with Responses-compatible API key accounts whose upstreams do not implement /models. The manifest handler previously selected one account and fetched its catalog before merging model_mapping aliases, so a permanent 404 returned 502 and hid models the administrator had already configured.\n\nTreat explicit model mappings from schedulable accounts as the authoritative Codex catalog. Build that catalog locally before account selection, preserve group filtering and final-body ETags, and retain the existing upstream discovery and failover path only when no mappings exist. Composite groups keep their existing account-first catalog behavior.
Anthropic fallbacks previously reused Antigravity defaults, leaking Gemini models into Claude-only groups. Composite aliases were also emitted with generic metadata and could be scheduled to accounts that did not own the exact mapping, while generated configs could default to a model absent from the downloaded catalog.
Keep provider defaults separated, derive alias capabilities from unique upstream targets with conservative fallback, require exact mapping ownership during scheduling, filter media targets, and choose generated config defaults from the fetched catalog.
Composite model catalogs expose exact account model_mapping aliases, but request routing only considered explicit routes or model-name detection. Unprefixed aliases were selectable but unroutable.
Resolve unique exact account ownership before the detector, keep explicit routes authoritative, and fail closed when an alias is claimed across platforms.
Codex treats the downloaded model catalog as a capability contract. Slug-only entries hide supported reasoning levels, can advertise invalid image inputs, and expose automatic or media-only models in the model picker. Generate complete route-aware metadata, preserve official manifests, filter non-agent models, and compute validators from the final catalog.
Codex model discovery expects a top-level models manifest, but Composite and other non-OpenAI groups either reached the OpenAI live-manifest handler or had no Codex-specific response at all. API key users also had no supported way to fetch that manifest and reference it from config.toml.
Generate minimal manifests from each group's effective model list while preserving the official OpenAI live path and the ordinary /models response. Add the Use Key flow for authenticated catalog download and model_catalog_json configuration without writing the API key into the downloaded file.
The model plaza route already supports public access, but both built-in /home headers omit its entry. Add the link to compact and default headers while keeping the existing feature and authentication settings authoritative, then cover the visibility matrix with focused component tests.
Constraint: Keep the change frontend-only and preserve router-owned access control
Rejected: Add the link to AppHeader only | /home renders its own headers and never mounts AppHeader
Confidence: high
Scope-risk: narrow
Reversibility: clean
Directive: Keep the model plaza entry gated by the existing opt-in flag and require-auth setting
Tested: HomeView focused Vitest, full frontend Vitest (223 files / 1554 tests), ESLint, vue-tsc, production build
Not-tested: Manual browser click-through against a running backend
Related: #5524
Yoga Sakti