Cross-link the jotbook

Inking links forward at write time (jotbook-ink step 6 connects a new entry to obviously-related existing ones), but it can't see the future: an entry inked last week never gains a link to one inked today. This skill is the deliberate, re-runnable pass that fixes that — it re-examines the whole inked collection and proposes the cross-links that are missing, so the jotbook stays connected as it grows.

It only ever adds links between entries that already exist. It never invents entries, never rewrites prose, and never edits a previously-inked entry without your confirmation.

User-triggered only. Run it on an explicit /jotbook-link (or /jot link); never auto-invoke it.

Resolve configuration

Read .claude/jotbook.local.md if present. From the frontmatter, extract:

The body of the settings file (after the closing ---) is house-style guidance — if it says anything about cross-linking (e.g. "prefer wikilinks over relative paths", "cross-link liberally"), honor it.

If the plugin hasn't been initialized (no .claude/jotbook.local.md), proceed with defaults and mention once that /jot init writes a settings file.

Inputs

• An optional focus slug from the invocation (/jotbook-link <slug> scopes the sweep to one entry's connections; with no argument, the sweep covers the whole collection).
• The inked entries under entries_dir.
• The user, who confirms before any entry is edited.

Procedure

1. Inventory the entries

Glob entries_dir for entry files (*.md for markdown/obsidian, *.html for html). Exclude the index file (index.md/index.html) and anything under the _jots/_pencils/_assets/_templates subdirectories.

If a focus slug was given, confirm it resolves to a real entry; if it doesn't, list what's there and ask — don't guess. If the collection has fewer than two entries, there's nothing to link — say so and stop.

2. Find missing-link candidates

For each entry (or, in focus mode, between the focus entry and every other), read enough to judge relatedness, then look for pairs that are topically related but not yet linked in either direction. Signals of relatedness:

• Shared tags (Obsidian tags: frontmatter, or HTML tag chips).
• Shared referenced files (the *Sources:* footer / sources: frontmatter — two entries documenting the same code are usually worth connecting).
• Title / subject overlap — same component, feature, or concept.
• Body mentions — one entry names a concept that another entry is about (a strong candidate for an inline link at the mention).

Skip pairs that are already linked (in either direction). Rank candidates by strength of relationship; cap the surfaced set at a manageable number (≈8) so the user isn't flooded — say if you truncated.

(Optional, lower priority: a jot in jots_dir whose subject clearly matches an existing entry can be surfaced too, but jots are lightweight pointers — prefer linking entries to entries.)

3. Present candidates and confirm

List the proposed links concisely — for each: the two entries, why they're related, and where the link would go (e.g. "inline at the eviction mention in the body" vs. "a See-also line at the foot"). Let the user pick which to apply (all / a subset / none). Default to proposing bidirectional links where both sides genuinely benefit, but a one-directional link is fine when only one side has a natural anchor.

Do not edit anything before the user confirms.

4. Apply the chosen links

For each approved link, make the smallest edit that reads naturally, in the format's idiom:

• Markdown: relative link [Title](slug.md) — inline at a mention, or under a trailing ## See also / *Related:* line.
• Obsidian: [[slug|Title]] wikilink (or [[slug]] when the title equals the slug).
• HTML: an <a href="slug.html">Title</a> anchor, placed in the body or a related/see-also block consistent with the template's conventions.

Prefer an inline link at an existing mention over a tacked-on list when the prose already references the other entry. Don't duplicate a link that's already present.

5. Report

Tell the user which entries you edited and the links added. Note that the index does not need rebuilding — adding cross-links changes neither entry titles nor the set of entries, so index.<ext> (owned by jotbook-ink) is unaffected. Only mention re-running /jotbook-ink if a title actually changed (it won't from this skill).

Hard rules

• User-triggered only; never auto-invoke. This skill edits previously-inked entries — it runs only on an explicit /jotbook-link (or /jot link).
• Confirm before every edit. Never modify a previously-inked entry without the user's explicit go-ahead (mirrors jotbook-ink's rule for editing existing entries).
• Only add links — never rewrite content. No restructuring, no re-toning, no deletions. The edit is a link and the minimal surrounding text to make it read.
• Never invent entries or slugs. Link only between entries that exist on disk.
• Don't duplicate existing links. Skip any pair already connected in either direction.
• Match the configured format's link syntax — relative .md links, [[wikilinks]], or <a> anchors per output_format, honoring any house-style preference.