feat: add Codex skills directory option to init command

[gotalab]

Summary

• Add ~/.codex/skills (Codex) as a selectable option during skillport init
• Add descriptive labels to clarify which agent uses each path (e.g., Claude Code, Codex)

Test plan

• uv run ruff check src/ passes
• uv run pytest passes (362 tests)
• uv run verify_server.py passes
• Manual verification of init command shows new options

🤖 Generated with Claude Code

[Copilot]

Pull request overview

This PR adds support for Codex skills directory during initialization and applies consistent code formatting across the codebase.

• Adds ~/.codex/skills (Codex) as a selectable option in the skillport init command
• Adds descriptive agent labels to existing directory options (e.g., .claude/skills (Claude Code))
• Applies consistent code formatting (line breaks, alignment) across multiple files

Reviewed changes

Copilot reviewed 32 out of 33 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
src/skillport/interfaces/cli/commands/init.py	Adds Codex skills directory option and agent labels to init command choices
src/skillport/shared/types.py	Reformats Field definitions for improved readability
src/skillport/shared/filters.py	Reformats list comprehension to single line
src/skillport/shared/exceptions.py	Reformats error message string to single line
src/skillport/shared/config.py	Reformats Field definitions and error messages for consistency
src/skillport/modules/skills/public/update.py	Reformats function signatures and conditionals, removes extra blank line
src/skillport/modules/skills/public/types.py	Reformats Field definitions for multiline consistency
src/skillport/modules/skills/public/read.py	Expands TEXT_EXTENSIONS set to multiple lines for readability
src/skillport/modules/skills/public/load.py	Reformats conditional expressions to single lines
src/skillport/modules/skills/public/list.py	Reformats conditional expression to single line
src/skillport/modules/skills/public/add.py	Reformats complex expressions and conditionals to multiple lines
src/skillport/modules/skills/internal/validation.py	Reformats ValidationIssue instantiation to single line
src/skillport/modules/skills/internal/manager.py	Reformats error messages and return statements to single lines
src/skillport/modules/skills/internal/github.py	Reformats function signatures, adds spacing for slice notation consistency
src/skillport/modules/indexing/public/query.py	Removes extra blank line
src/skillport/modules/indexing/public/index.py	Reformats return statements to single lines
src/skillport/modules/indexing/internal/state.py	Reformats function signatures and conditionals
src/skillport/modules/indexing/internal/search_service.py	Reformats function signatures and error messages
src/skillport/modules/indexing/internal/models.py	Removes leading blank line
src/skillport/modules/indexing/internal/lancedb.py	Reformats comprehensions, conditionals, and function calls
src/skillport/modules/indexing/internal/embeddings.py	Reformats function calls to single lines
src/skillport/interfaces/mcp/instructions.py	Reformats method chain to single line
src/skillport/interfaces/cli/theme.py	Reformats Theme dictionary and function signature
src/skillport/interfaces/cli/commands/update.py	Reformats conditionals and list operations
src/skillport/interfaces/cli/commands/show.py	Reformats Panel instantiation to multiple lines
src/skillport/interfaces/cli/commands/serve.py	Removes extra blank line
src/skillport/interfaces/cli/commands/remove.py	Reformats console.print_json calls to multiple lines
src/skillport/interfaces/cli/commands/list.py	Reformats long console.print statement
src/skillport/interfaces/cli/commands/lint.py	Reformats list comprehension, console.print_json, and Panel calls
src/skillport/interfaces/cli/commands/doc.py	Reformats long string to single line
src/skillport/interfaces/cli/commands/add.py	Reformats complex expressions and console output calls
src/skillport/interfaces/cli/auto_index.py	Reformats console.print statement to single line
src/skillport/interfaces/cli/app.py	Reformats multiline help strings for command definitions

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