chore(main): release 0.38.6

[droplet-bot]

🤖 I have created a release beep boop

0.38.6 (2026-05-04)

Features

• handler: add OpenAI and Anthropic compatible API endpoints (41ec761)
• handler: add real token-by-token streaming via direct llama-server HTTP (1abfafd)
• handler: add tool-use support and rename to generic inference server (11c8f22)
• model: add creator tracking to model resource (#782) (6006495)

Bug Fixes

• acl: adapt to x/acl ListPermissions API split (0ebae06)
• anthropic: accept system field as string or array of content blocks (ea55b40)
• anthropic: merge multiple text content blocks into single element (a102fc7)
• ci,handler: use maximize-build-space action and fix creator field name (aef3cd8)
• deps: bump x for OpenFGA gRPC dns:/// + round_robin LB fix (be9e861)
• deps: bump x for periodic DNS re-resolution resolver (1490240)
• handler: fix protojson serialization and error propagation in model trigger (f564f23)
• handler: use gRPC path for OpenAI/Anthropic API instead of HTTP proxy (2d7a2c6)

Miscellaneous

• ci: remove maximize-build-space action (7f910e9)
• ci: replace maximize-build-space with free-disk-space action (2c0fa7a)
• deps: bump github.com/instill-ai/x for gRPC client-side LB (57dc2e7)
• deps: bump golang.org/x/crypto from 0.39.0 to 0.45.0 (#781) (5ba9c88)
• deps: update protogen-go and x dependencies (#786) (611f0f2)
• go: upgrade to 1.25.6 (b1e0c30)

Refactor

• acl: migrate to shared ACL client library and remove deprecated handlers (#784) (b32dd03)
• api: align Model API naming with Pipeline convention (#785) (aa64bd3)
• model: adopt flattened protobuf packages and AIP-compliant resource names (#783) (1d372db)
• model: move repository tag management APIs for Docker registry (#779) (0247eee)
• test: standardize file naming and migrate from JWT to Basic Auth (#787) (f732758)

Tests

• handler: add unit tests for streaming and tool-call translation (fc6bbc0)

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