v1.26.0

Highlights

• Added Markdown export for Sheets with /sheets/<token> URL support.
• Hardened sheet import-md parsing so fenced and indented code blocks are not imported as tables.
• Improved Doc/Wiki Markdown export with safer embedded Sheet expansion and --expand-sheets=false fallback for Wiki exports.
• Fixed Markdown image upload handling for nested imported blocks and kept JSON stdout clean for doc import --output json.
• Made wiki export-tree safer for full-tree exports, including unlimited depth by default, per-document assets directories, pagination checks, and non-zero exit on partial failures.
• Made board export-code compatible with both array and map node payloads.
• Synced README and feishu-cli skills with real CLI flags and examples.

Validation

• go test -count=1 ./...
• go vet ./...
• git diff --check
• gofmt -l cmd internal
• python3 -m py_compile skills/feishu-cli-board/scripts/svg_to_board.py
• make build-all
• Real CLI smoke tests for doc import, sheet import-md, and sheet export --format markdown.