feat: add navigable JSON summaries for tool output

Tool JSON output now starts with a compact navigable summary view.
Expandable tool output includes quick open-file and diff actions for changed files.
Reasoning headers strip stray HTML comments, and navigation tools stay compact.

CHANGELOG.md

@@ -13,6 +13,9 @@ All notable changes to this project will be documented in this file.
 - Desktop: the header dropdown (instance / usage / MCP) was restyled with cards — usage grouped per provider, hosts showing a colored status line with ping and the active host highlighted, and MCP servers in one card. Host statuses persist between openings instead of flashing "Unknown", and switching to an already-checked host is immediate.
 - Desktop: the servers list in Settings shows live per-server reachability, and importing a pairing link is the primary way to add a server.
 - Desktop: Windows builds can launch at login and minimize to the system tray (thanks to @achcyano).
+- Chat/Tools: every tool call now expands to show its input, result, and errors, including MCP, plugin, and custom tools; Read and Skill stay compact links to their files. JSON results open in a new navigable summary view with linked URLs and expandable nested data, alongside tree and raw JSON views.
+- Chat/Tools: expanded file-edit and patch results now include per-file buttons to open the diff or jump to the first changed line in the file editor.
+- Chat/Thinking: reasoning parts stay separate and in chronological order instead of merging into one block, and collapsed previews no longer show empty trailing HTML comments.
 - Projects: each project can now set its own default model (thanks to @makeittech).
 - Diff/Chat: added a Last turn mode to the Diff view, and latest-turn changed-file chips in chat now open that snapshot while older turn chips stay read-only.
 - Chat: Mermaid diagrams now have zoom controls (thanks to @c-w-xiaohei).