CodexSwitch v26.07.1800

Added

• Replaced the active Python compatibility-proxy process with an in-repository,
  statically linked Go implementation. It retains the existing port and routes
  for OpenAI OAuth, Azure OpenAI, OpenCode Go, OpenRouter and Claude Messages,
  while Commander, account management and the Textual TUI remain in Python.
• The installer now detects Go, builds cmd/codexswitch-proxy reproducibly and
  installs the binary as codex-provider-proxy. A narrow credential helper
  preserves access to local and remote encrypted vault entries without placing
  provider secrets in the Go process arguments, logs or configuration.
• Added Go-native coverage for unified health, Claude tool/image translation,
  long identifiers, thinking state, cached usage, namespace/custom tools,
  Responses SSE collection, complete Codex model metadata and an end-to-end
  Claude-to-Azure round trip.

Fixed

• Claude Code WebSearch through the OpenAI Responses bridge now maps
  Anthropic's server-side search schema to OpenAI's native web_search tool
  and converts search calls plus URL citations back into Claude server-tool
  streaming blocks. Live verification with gpt-5.6-sol returned real source
  URLs instead of Did 0 searches.
• Empty optional pages arguments emitted by GPT for Claude's Read tool are
  now removed by the bridge, avoiding a needless validation failure before
  text and image reads.
• Claude Read image results are now retained as high-detail Responses vision
  inputs instead of being discarded while translating the tool result. A live
  six-image matrix with gpt-5.6-sol passed a logo, photo, two labeled
  diagrams, an eight-panel orientation chart and exact 8x8 color-cell counts;
  a separate two-image task also identified both files correctly.
• Claude/OpenAI protocol translation now preserves mixed content ordering,
  safely shortens overlong tool names and call IDs with deterministic reverse
  mapping, honors explicit auto/any/none/named tool choices and Claude's
  parallel-tool switch, and forwards web-search location hints.
• OpenAI reasoning summaries and encrypted continuation state are now returned
  as Claude thinking blocks. Cached-token usage, terminal stop reasons and stop
  sequences are retained instead of being flattened to generic defaults.
• Streaming Claude requests now translate OpenAI Responses SSE events directly
  to Claude SSE for thinking, text, function calls and native web search. The
  experimental ChatGPT OAuth transport forwards the upstream event stream
  instead of buffering the complete response first. Live Claude Code checks
  passed Bash, WebSearch and an image Read through the streaming route.
• The Go OpenAI transport forces the downstream SSE content type when the
  ChatGPT Codex endpoint omits it, preventing Claude from treating a valid
  stream as plain text. OpenRouter's catalog is normalized to Codex's complete
  models schema instead of forwarding the provider-specific data envelope.
• Live Go-proxy verification passed Claude Code tool calls on OpenAI, Azure and
  OpenRouter, image input and OpenAI WebSearch/thinking, plus a normal Codex CLI
  OpenRouter shell call. OpenCode Go returned its current insufficient-balance
  error correctly, so a paid completion could not be re-run in this session.
• Revalidated tool results on Claude Code 2.1.212 rather than counting tool
  invocations: Read, Write, Edit, Bash, NotebookEdit, WebSearch, WebFetch,
  image reads, namespaced MCP and Agent passed. Claude Code 2.1.212 does not
  advertise standalone Glob or Grep tools in these sessions.

Changed

• Releases now use the JJ.MM.HHMM version format with local 24-hour time;
  this release is 26.07.1800 for 18 July 2026 at 18:00 CEST.