Minor CSS clean-ups

[cboos]

(I got burnt by the "small fix doesn't deserve a PR" for 7c2e6f6, so to avoid that mistake again, here's a collection of "small fixes that don't deserve a PR on their own"...)

• Replace deprecated word-wrap with overflow-wrap in hook attachment blocks. (from Render hook attachment entries at FULL detail (#128) #149)

The word-wrap property is deprecated. Replace with overflow-wrap: break-word; at line 407 to preserve behavior and clear the deprecation warning. Note: the same deprecated property appears at lines 470, 492, 746, 900, and 1006 elsewhere in the file—consider addressing all instances for consistency.

• too large spacing between "▼▼" in Chrome (from CB's ideas scratchpad #73)

Fix with letter-spacing: -.2em (not too much as then this would break FF)

• Fix WebFetch output ("22 lines" / "559.5 KB" overlap)

more ...

[cboos]

The third unchecked item ("Fix WebFetch output — 22 lines / 559.5 KB overlap") is a specific instance of a more general shape that's recurring as plugins land. Surfaced again in PR #173's federation review by clmail/carol — her plugin emits a structured header <p> (From/To/Subject/Time) followed by render_markdown_collapsible(...), and the fold-bar's first row visually overlaps the preceding paragraph because .markdown p's bottom margin is zero and the <details> top margin is also zero. Even more severe than the WebFetch case since the overlapping content is structured (header lines) rather than a single URL/meta line.

The underlying class of bug: render_markdown_collapsible(...) (and the bare .collapsible-code primitive generally) doesn't reserve any top margin when preceded by sibling content within the same .markdown container. The existing fix for .tool_result .collapsible-code { margin-top: -2.5em } is a deliberate negative margin to merge the collapsible into the tool_result header bar; the WebFetch case overrode it back to margin-top: 0 with .webfetch-result.collapsible-code (line 1233-1235) because WebFetch needs space for meta badges — but 0 is still wrong when there's actually a preceding paragraph (the bug in this issue's screenshot).

Suggest reframing the unchecked third item to cover the generalized shape:

Fix overlap between content above and collapsible body. Manifests in WebFetch (this issue's screenshot — "22 lines / 559.5 KB" overlap with the URL/meta line above), in plugin renders that emit a header before render_markdown_collapsible(...) (clmail's read-mail-card and look-card patterns — see PR #173 federation context), and likely in any future built-in or plugin that wants "identifying header above expandable body".

Suggested fix shape: a CSS rule that adds a small top margin to .collapsible-code when there's a preceding sibling within the same .markdown scope, scoped narrowly enough that it doesn't regress the existing .tool_result negative-margin merge or the .webfetch-result / .task-async-answer zero-margin overrides. Possible selector: .markdown > * + div .collapsible-code:not(.tool_result *) or similar. Visual diff review against built-in tool cards + the clmail plugin reproducer needed before landing.

Reproducer for the plugin variant: render ~/.claude/projects/-home-cboos-Workspace-github-daain-claude-code-log-main/f4510f6b-867f-41f9-8c32-7684520aa4ad.jsonl at --detail full --format html with the clmail plugin installed from ~/Workspace/BCT/Common/TechVision/ClaudeCode/plugins/clmail/carol/packages/claude-code-log-clmail; look for "✉️ Read mail #2657" or "Screen of <actor>" cards.

(Filing as a comment rather than editing the body since this is your collection — fold into the checkbox text as you see fit.)