🛠 Developer experience (EPIC)

Overview

This epic tracks the Developer experience improvements for github-code-search, as referenced in the Roadmap #63.

It is composed of two sub-issues targeting v1.7.0:

Priority	Item	Status
🟡	Shell completions — `bash`, `zsh` and `fish` completions for subcommands and options	🔲 pending
🟢	Additional syntax highlighting — PHP, C/C++, Swift, Terraform/HCL, Dockerfile	🔲 pending

github-code-search completions --shell bash prints a valid bash completion script
github-code-search completions --shell zsh prints a valid zsh completion script
github-code-search completions --shell fish prints a valid fish completion script
Auto-detection from $SHELL when --shell is omitted
PHP, C/C++, Swift, Terraform/HCL and Dockerfile files are syntax-highlighted in the TUI
All new code is covered by unit tests
bun test, bun run lint, bun run format:check, bun run knip, bun run build.ts all pass

v1.7.0 (minor — new features, backward-compatible)

Add PHP, C/C++, Swift, Terraform/HCL and Dockerfile syntax highlighting