[Bug] FileTree long comments cannot be read fully without mouse hover #51

Problem

In OINK v1.2.0, FileTree comments are truncated on desktop and tablet. The hover tooltip is not an equivalent keyboard/touch reading path. Below 576px, the existing stacked layout already wraps comments.

Reproduce

Use a site importing github.com/pgsty/oink@v1.2.0, with Hugo 0.165.0 Extended and Go 1.27.0. Add this fence to a Markdown page:

```filetree
rocksdb-data/
  data/
    m/    # schema store: property keys, vertex/edge/index labels, counters
    g/    # graph store: vertices, edges, index tables, olap tables
    s/    # system store: tasks, server info, backend meta (driver version)
```

At 1440px and 768px, Tab to the divider and press Home to maximize the comment column. Long comments still end in ellipses.

Expected behavior

Full comments should be readable without hover, with aligned rows and usable filename/divider controls. Wrapping may increase row height. Mobile stacking and print should remain usable.

Before	After

Proposed fix: #52.