AT Tool v0.3.7

feat(json): JSON workbench tool (format / query / diff / convert) (#7)

* feat(json): scaffold JSON tool entry

* feat(json): shared types

* feat(json): format / minify / sortKeys utilities

* refactor(json): discriminate parse result + harden error location

* feat(json): bidirectional convert JSON/YAML/TOML/CSV

* refactor(json): discriminate convert result + cover CRLF

* feat(json): semantic diff wrapper around jsondiffpatch

* feat(json): useFileDrop composable for drag-drop + open-file

* feat(json): Monaco loader + CodeEditor wrapper

* feat(json): collapsible JSON tree view

* feat(json): format pane with tree view

* feat(json): JSONPath query pane

* feat(json): semantic diff pane

* feat(json): bidirectional format conversion pane

* perf(json): lazy-load JsonTool to keep main bundle slim

* chore: bump version to 0.3.7

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Co-authored-by: attson <attson@attsons-Mac-mini.local>