Synara + Muse Spark 1.3 Contributor (Console Go) fails with Recursive JSON schemas are not currently supported #47157

Description

Using Synara 0.8.1 on macOS with opencode 1.18.27 and model opencode-go/muse-spark-1.3-contributor (free contributor, opencode-go paid subscription) always fails immediately with:

AI_APICallError: Error from provider (Console Go): Upstream request failed: [invalid_request_error] Recursive JSON schemas are not currently supported

Same error occurs with muse-spark-1.2-contributor. Reported on behalf of user running Meta Muse Spark via Console Go. Mentioning Meta Muse Spark as requested.

Reproduction

1. Install Synara desktop 0.8.1 on macOS, enable opencode provider (binary opencode, version 1.18.27 verified via opencode --version).
2. In OpenCode config select model opencode-go/muse-spark-1.3-contributor.
3. Start any task via Synara using opencode runtime (e.g. cwd /Users/AleksandrSlobodanyuk/Projects/Current/mj/opsarmor.net).
4. First request fails before any tool executes with error above. Thread title generation also fails with same model (generateThreadTitle: Unexpected server error. model=opencode-go/muse-spark-1.3-contributor).

Expected

Request succeeds like it does in opencode TUI directly, or like other models do inside Synara.

Actual / Logs

From ~/.local/share/opencode/log/opencode.log:

stream providerID=opencode-go modelID=muse-spark-1.3-contributor ... error.error="AI_APICallError: Error from provider (Console Go): Upstream request failed: [invalid_request_error] Recursive JSON schemas are not currently supported"
stream providerID=opencode-go modelID=muse-spark-1.2-contributor ... same error
stream providerID=opencode-go modelID=qwen3.8-flash ... success (step=1, exiting loop)

From ~/.synara/userdata/logs/server.log:

provider command reactor failed to generate thread title ... threadModel: opencode-go/muse-spark-1.3-contributor ... Text generation failed in generateThreadTitle

grep -c "Recursive JSON" ~/.local/share/opencode/log/opencode.log = 15 occurrences.

Analysis / Suspected root cause

• Same model works fine in opencode TUI directly (this issue was triaged from a live opencode session on muse-spark-1.3-contributor in another project with no failure).
• Same Synara setup works with qwen3.8-flash, so failure is Muse-Spark-specific.
• Synara is MCP-native both ways: agents running inside Synara automatically receive Synara task-coordination tools via agent gateway MCP proxy (~/.synara/userdata/agent-gateway-mcp-proxy.mjs -> SYNARA_AGENT_GATEWAY_URL). Those extra tools are only present in Synara-driven sessions, explaining TUI-ok vs Synara-fail difference.
• Meta Model API explicitly rejects recursive schemas (https://ai.developer.meta.com/docs/features/structured-output/).
• Likely same root cause as Recursive $ref in postgres tool schemas breaks Meta Muse Spark ("Recursive JSON schemas are not currently supported") #45800 (postgres tool \ sem recursive $ref $defs __schema0) and Bug Report — houseCARL + Muse Spark 1.2 Contributor (Console Go) — Recursive JSON Schema #45823 (housecarl MCP recursive $ref): Synara gateway tools contain self-referencing $ref, and packages/opencode/src/provider/transform.ts has sanitizers for OpenAI/Moonshot/Gemini but no Meta/Muse-specific sanitization, so recursive schemas pass through to Meta unchanged.
• Unmerged PR fix(provider): inline openai-compatible tool refs #29295 (inline local $refs, replace recursive refs with permissive {}) or merged MCP fix fix(mcp): fall back on circular tool schemas #16910 (fallback to {type:object, additionalProperties:true}) approach would apply here too, but scoped to Meta provider.

Workaround tried

• Switching Synara task to qwen3.8-flash works.
• Using muse-spark-1.3-contributor directly in opencode TUI (outside Synara) works.

Environment

• macOS (Apple Silicon), Synara 0.8.1, Synara.app present in /Applications
• opencode 1.18.27 (/Users/AleksandrSlobodanyuk/.hermes/node/bin/opencode)
• Global opencode.json model: opencode-go/muse-spark-1.3-contributor, MCP: only 1password (disabled)
• Auth: opencode-go subscription in ~/.local/share/opencode/auth.json
• No project-level opencode.json in failing project

Request

1. Log / identify which tool schema is recursive when Meta rejects it (include tool name in error or debug log).
2. Add Meta/Muse schema sanitization in provider transform layer (flatten recursive $ref cycles before sending to Console Go / Meta API).
3. Alternatively document Synara gateway tools as incompatible with Muse Spark until fixed.