The v16.3.12 explicit `selector` field (ff3b0c795c) was consumed by the
read tool but never threaded into the TUI renderers: ReadRenderArgs in
both readToolRenderer (read.ts) and ReadToolGroupComponent only derived
selectors from path-embedded `:sel` suffixes, so split-arg calls like
{ path, selector: "2-3" } rendered bare paths without line ranges or
raw modifiers.
Joined the explicit selector (trimmed, leading colons stripped, non-string
guarded) back onto the display path in renderCall, renderResult error and
success branches, and the grouped read summary, keeping hyperlinks on the
base path only.
Adopted from PR #4904 (both commits squashed), minus its unrelated
workflow-notice.md prompt churn.
Fixes#4899