Replace fragile pattern/jump-target approach with a two-stage lookup:
1. fish-config.index maps keyword aliases to exact heading text so
"keybindings" resolves to "# 3. KEY BINDINGS" without guessing.
2. Normalized scan fallback strips non-alphanumeric chars from both
keyword and headings for unknown terms.
Line numbers are resolved at runtime via grep -F so the index never
goes stale from doc edits — only heading renames require updates.
Also fix --section-delimiter: ov matches against logical (ANSI-stripped)
text, so "^#" is correct for bat-colored output; the previous ANSI
regex never matched, leaving the sections sidebar empty.
rootiest
2af129f081
