fix(ui): subtask overflow/borders, settings Preferred IDE card, chat …

[claytonlin1110]

Description

Addresses UI/UX items from eigent-ai/eigent#1243 (v0.0.82).

Changes

Subtask (TaskItem)

• Text overflow: Text inside subtask no longer overflows; added min-w-0, flex-1, overflow-hidden, and break-words so long content stays inside the box.
• Border alignment: Single border on the outer container; removed inner border-b so the box draws as one aligned rectangle.

Settings – General (Preferred IDE)

• Preferred IDE section is a full card like Network Proxy (same rounded-2xl / bg-surface-secondary / px-6 py-4).
• Both Network Proxy and Preferred IDE sit inside the same content section with consistent gap-6 and description spacing (mb-4).

Chat – UserQueryGroup (Sticky Task Box & Other Messages)

• Alignment: Sticky Task Box and Other Messages share the same horizontal padding so left/right edges align.
• User message: pl-sm → px-sm for symmetric padding.
• Other Messages: pl-3 → px-sm to match task box and user message.
• File list under messages: removed extra pl-3 so it aligns with message content.

TaskCard

• Replaced pl-sm with px-sm on the task card wrapper for symmetric padding and consistent alignment in the left panel.

Closes #1243

What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

[claytonlin1110]

@Wendong-Fan Please review.
cc @4pmtong @a7m-1st

[claytonlin1110]

This also fixes #1244 and #1245