The previous validation allowed "b1" which is invalid because 'b' prefix
expects 2-digit integers (10-99), not 1-digit. This caused ValidationError
when selecting old format content.
Now validates that:
- 'a' prefix: 1 digit (a0-a9)
- 'b' prefix: 2 digits (b10-b99)
- 'c' prefix: 3 digits (c100-c999)
- etc.
Invalid indices are converted to 'a1' as a safe default.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
The index validation was incorrectly rejecting valid tldraw fractional
indices like "b1", "c10", etc. tldraw's fractional indexing uses:
- First letter (a-z) indicates integer part length (a=1 digit, b=2 digits)
- Followed by alphanumeric characters for value and jitter
This was causing ValidationError on production for Embed shapes with
index "b1". Fixed regex in all validation functions to accept any
lowercase letter prefix, not just 'a'.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Updates to collaborative terminal integration and various shape
improvements across the canvas.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Jeff Emmett