CLAUDE.md size warning shows incorrect character count (44K reported vs 17K actual)

Bug: CLAUDE.md size warning shows incorrect character count

Version: 2.1.27 (regression - not present in 2.1.17)

Warning message:

⚠Large CLAUDE.md will impact performance (44.2k chars > 40.0k) • /memory to edit

Actual file sizes:

• ~/CLAUDE.md: 4,513 chars
• ~/Projects/changemanaged.io/CLAUDE.md: 12,708 chars
• Total: 17,221 chars

Expected: No warning (17K < 40K threshold)
Actual: Warning claims 44.2K chars

Hypothesis: The calculation may be:

• Counting files multiple times
• Including other CLAUDE.md files from unrelated directories
• Including additional system prompt content in the count

Repro:

1. Have a global ~/CLAUDE.md (~4.5K chars)
2. Have a project CLAUDE.md (~12.7K chars)
3. Start fresh session in the project directory
4. Warning appears with inflated character count