docs: add CHANGELOG.md with v0.1.0 and v0.1.1 release notes

refactor: rename all MinGate references to SoulClaw across src and docs

fix(cli): resolve .env from data directory

fix(feishu): simplify and harden security to rely solely on embedded tokens rather than glitchy hmac signatures without encrypt keys

fix(feishu): extract v2 token from payload.header.token to prevent challenge mismatch

fix(feishu): verify challenge directly since signature headers are absent during url_verification

fix(feishu): robustly locate challenge token in v1 and v2 payload formats

fix(feishu): format authentication errors as strict JSON to appease Feishu's webhook validation UI

chore: add LOC update script and refresh UI/Docs metrics

docs: finalize rebranding, replace all MinGate references with SoulClaw and expand functional comparison matrix

fix(gateway): resolve endpoint shadowing bug preventing health status from rendering; add webui to metrics

feat(ui): display local time; restore JSON toggle & WS dot; compact cloud usage

fix(ui): enforce min-height on flex layout to activate internal log scrollbar

style(ui): high-contrast custom scrollbars with color coding for chat and logs

style(ui): unify scrollbar aesthetics with minimalist custom styles