Feature Request: Support loading CLAUDE.md alongside AGENTS.md for Claude Code compatibility

Motivation

Many developers use both Claude Code and Kimi Code CLI in their workflow. Projects that have been working with Claude Code often already contain a CLAUDE.md file (or .claude/CLAUDE.md) with project-specific instructions, coding styles, and context.

Currently, Kimi CLI only discovers AGENTS.md files. This means users must either:

• Duplicate their CLAUDE.md content into AGENTS.md, or
• Maintain two separate config files that can easily drift out of sync.

Request

Please extend load_agents_md() in kimi_cli/soul/agent.py to also discover and merge CLAUDE.md files, using the same discovery logic as AGENTS.md:

Within a single directory, CLAUDE.md and claude.md should be mutually exclusive (uppercase wins), and co-exist with any AGENTS.md in the same directory. This ensures Kimi-native configs always take precedence while still picking up existing Claude configs.

Proposed Implementation

The change is localized to kimi_cli/soul/agent.py::load_agents_md():

# Inside the directory loop, after collecting AGENTS.md candidates:
claude_dir_path = d / ".claude" / "CLAUDE.md"
claude_candidates = [d / "CLAUDE.md", d / "claude.md"]

if await claude_dir_path.is_file():
    candidates.append(claude_dir_path)
for cc in claude_candidates:
    if await cc.is_file():
        candidates.append(cc)
        break

And update the docstring + log messages accordingly.

Benefits

• Zero-friction migration from Claude Code to Kimi CLI.
• No breaking changes: existing AGENTS.md-only projects behave exactly the same.
• Low effort, high compatibility value.

I have already tested this patch locally by editing the installed package, and it works as expected — CLAUDE.md content is correctly injected into the system prompt alongside AGENTS.md.

Start in kimi_cli/soul/agent.py at load_agents_md() and read its existing AGENTS.md discovery loop. Add the listed .claude/CLAUDE.md, CLAUDE.md, and claude.md handling while preserving uppercase precedence and coexistence with AGENTS.md, then update the docstring and log messages. Done means all supported files are merged in the stated priority order without changing AGENTS.md-only behavior.