docs(readme): rename Claude Code Integration to Agent Skill Integration

- Rename section heading to Agent Skill Integration across all languages
- Reword descriptions to be provider-agnostic

chore(deps): update direct and indirect dependencies

- Bump several direct dependencies to newer patch versions, including the Anthropic client and table rendering library
- Update core golang.org/x packages to their latest releases
- Refresh multiple indirect dependencies to newer versions to keep the dependency tree up to date

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

fix(openai): propagate write errors in streaming completion

- Return error instead of silently discarding write failures in CompletionStream

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

fix(cmd): use MkdirAll directly for prompt folder creation

- Replace file.IsDir check with direct os.MkdirAll to avoid fatal error when prompt folder does not exist
- Apply fix to all three prompt folder handling cases (flag, config, default)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

fix(docker): create home directory for codegpt user in container (#260)

- Replace file.IsDir check with direct os.MkdirAll to avoid fatal error when config directory path does not exist
- Remove -H flag from adduser so the home directory is created for the codegpt user in Docker

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

feat: add fallback to regular completion on function‑call failures

- Add comment noting that some models do not support function calls and should use regular completion directly
- Attempt a function‑call based completion first, then fall back to regular completion if it fails
- Include error handling to retry with regular completion when the function call returns an error
- Return an error when the completion response does not contain exactly one choice

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

build: run container securely as a non-root user

- Add a non-root user for running the container
- Set the container to run as the new user instead of root

Signed-off-by: appleboy <appleboy.tw@gmail.com>

docs: improve table formatting in Chinese README files

- Fix table formatting by adjusting column separator lines in both Chinese README files

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

feat: improve OpenAI response handling and token usage reporting (#246)

- Ignore errors when determining if the config file exists before creating it
- Add support for returning detailed prompt token usage in OpenAI responses
- Use MaxCompletionTokens instead of MaxTokens when specifying completion limits
- Remove redundant handling for O-series OpenAI models in completion requests

Signed-off-by: appleboy <appleboy.tw@gmail.com>

fix: enhance PR title generation with retries and better errors (#243)

- Add retry logic for generating the pull request title, retrying up to 3 times if the response is empty
- Return an explicit error if the OpenAI API returns no choices, or if reasoning content is present (unsupported)
- Improve error reporting for failed title generation attempts

fix #242

Signed-off-by: appleboy <appleboy.tw@gmail.com>