* fix(antigravity): translate JSON Schema unions to Gemini nullable
Tool parameter schemas using JSON Schema 2020-12 unions like
"type": ["string", "null"] crash Gemini's function_declarations parser
with HTTP 400. Two existing tools trip this:
- core/framework/tasks/tools/colony_tools.py:52 (owner in _update_schema)
- core/framework/tasks/tools/session_tools.py:84-87 (same shape)
Add an adapter-level sanitizer that walks the schema tree and converts
union-with-null to OpenAPI 3.0 "nullable": true (which Gemini accepts).
Recurses into properties, items, additionalProperties, and the
anyOf/oneOf/allOf combinators. Source schemas remain valid JSON Schema
so OpenAI/Anthropic backends are unaffected.
* fix(antigravity): bump spoofed UA past Google's deprecation cutoff
Google has deprecated client version "Antigravity/1.18.3" — chats now
return "This version of Antigravity is no longer supported" instead of
a real model response.
Bump the spoofed User-Agent to "Antigravity/1.23.2" + "Electron/39.2.3"
(current desktop release) and add a comment that this needs periodic
re-bumping. A more durable fix (auto-detect from the installed app's
Info.plist) is a follow-up.
* fix(antigravity): fail loud on multi-type non-null Gemini schema unions
Per review on PR #7170: silently picking the first type from a union
like ["string", "integer", "null"] changes the contract for callers
that rely on the other types, and the failure is hard to diagnose at
the Gemini side. Replace the silent narrowing with a ValueError that
points the schema author at anyOf or a single type.
A repo scan finds no current Gemini-bound schemas using multi-type
non-null unions, so this branch is preventative for future authors.
* chore(antigravity): drop em dash from test docstring
Hundao
4a9b22719b