nudge

name	nudge
description	This skill (explicit /nudge only) manages Claude Code feature-adoption nudges sourced from the Basic Memory note main/reference/claude-code-noteworthy-features. Bare /nudge = Mode A (sync): re-read the note, filter out features already marked adopted or declined, and regenerate the tip cache ~/.claude/references/claude-code-nudge-tips.txt that the SessionStart hook reads. /nudge check = Mode B (adoption check): scan Claude Code session transcripts across all projects for real evidence of feature use, preview proposed adoption-status transitions, write approved changes to the note's frontmatter, then regenerate the same cache. No delegate agent exists (unlike knowledge-garden/knowledge-maintain, whose graph-wide phrasing routes through their agent) — natural-language phrasing like 'sync nudge tips' or 'nudge me on unused features' does NOT auto-invoke this skill; recognize the intent and suggest the user run `/nudge` or `/nudge check` explicitly.
user-invocable	true
disable-model-invocation	true
argument-hint	[check]
allowed-tools	["Grep","Read","Write","mcp__basic-memory__read_note","mcp__basic-memory__edit_note"]

Nudge

Manage the Claude Code feature-adoption nudge cycle against the Basic Memory note main/reference/claude-code-noteworthy-features. Two modes on the same data (same note, same cache, same contract):

• Bare /nudge (or no argument) → Mode A (sync). Re-read the note, filter out adopted/declined features, and regenerate the tip cache.
• /nudge check → Mode B (adoption check). Scan transcripts for real feature-use evidence, preview status transitions, write approved changes to the note's frontmatter, then regenerate the same cache.

Route by the argument: no argument / sync phrasing → Mode A; check / adoption phrasing → Mode B.

Intentionally Claude-Code-specific, not a template for a generic mechanism. This skill hardcodes the note permalink (main/reference/claude-code-noteworthy-features) and Claude-Code slug vocabulary — a deliberate, stated exception to this project's general domain-generic-skill convention, because the whole task is specifically about Claude Code feature adoption.

The single rule and line grammar both modes share when regenerating the cache live in references/tip-cache-contract.md — the single source of truth, so the two independent write paths never drift.

Mode A: sync

Follows the same vendor-sync pattern as tag-sync: registry (BM note) → fetch via MCP → filter → write to a synced local file the SessionStart hook (hooks/tip-fragment.sh) reads without ever touching Basic Memory. Always re-fetches on invocation — no same-day guard (read_note is one cheap call and the hook already throttles tip display to once/day independently).

Step 1: Fetch the note

mcp__basic-memory__read_note(
  identifier="main/reference/claude-code-noteworthy-features",
  output_format="json",
  include_frontmatter=true
)

On failure or an empty/malformed result, report the error and exit without writing — never overwrite a working cache with partial content. A missing note is reported, never auto-created (that's /intel's kind of job, not this skill's). Zero [nudge] observations is a legitimate state — write an empty cache file.

Step 2: Filter

For each [nudge] observation, extract its trailing Feature: <slug> token. Check the slug-uniqueness invariant first (see references/tip-cache-contract.md): if any two tokens normalize to the same slug, report the colliding lines and stop. Otherwise look up adoption-<slug> in frontmatter (absent → unseen) and apply the exclusion rule: exclude a line whose value, trimmed and lowercased, is adopted or declined.

Step 3: Write

Build the filtered list of lines verbatim from the note (see the contract file's line-grammar section — never reformat or truncate) and Write them to ~/.claude/references/claude-code-nudge-tips.txt — a plain full-file overwrite, matching tag-sync's convention. The reader degrades gracefully on a partial read, so no temp-file-and-rename dance.

Step 4: Report

## Nudge Tips Synced

File: ~/.claude/references/claude-code-nudge-tips.txt
Tips: <N> eligible (<M> excluded as already adopted)

Mode B: adoption check

Mirrors session-reflect's scan → preview → approve → write shape, but scans historical transcripts across all projects.

Error handling

• Note missing — report and exit; never auto-create it (that's /intel's kind of job).
• No [nudge] observations — report "No features to check adoption for" and exit.
• ~/.claude/projects doesn't exist (a "Path does not exist" tool error, not a clean zero-match) — the benign fresh-install case. Propose nudged for anything unseen, skip the rest; do NOT report it as a failure.
• Either Step-2 sanity grep returns zero matches, or errors with anything other than the missing-directory signature — genuine tool/mechanism failure; report and stop rather than proposing nudged on possibly-broken data.
• A single slug's grep is a clean zero-match — normal no-evidence; propose nudged if currently unseen.
• A single slug's grep errors, or every matched file fails to Read — report it as scan-failed in the preview and exclude it from any transition this run.
• Some (not all) matched files for a slug fail to Read — exclude only the unreadable files from evidence and keep evaluating the readable ones; never let one unreadable file suppress an adopted transition when another matched file already passed. Flag the count in the Step 4 preview ("N files could not be read and were excluded") even when the slug still proceeds to adopted. When no readable file passes either, route the slug to the scan-failed bucket rather than confidently proposing nudged.
• A slug's tip has no backtick span (empty search term) — skip and report it.
• edit_note find_replace fails — re-read, retry once against the current frontmatter value, then report and stop. Do not loop.
• User declines all — report "No changes made" and exit.

1. Load the catalog

mcp__basic-memory__read_note(
  identifier="main/reference/claude-code-noteworthy-features",
  output_format="json",
  include_frontmatter=true
)

Collect each [nudge] observation's Feature: <slug> token + tip text, and each current adoption-<slug> frontmatter value (absent → unseen). Check the slug-uniqueness invariant (references/tip-cache-contract.md): report a collision and stop before proposing any transitions.

2. Gather evidence

Follow references/evidence-detection.md IN FULL — the two once-per-invocation sanity checks, the per-slug search-term derivation, the slash-command-vs-prose branch, and the Shape A/Shape B genuine-dispatch confirmation. It searches transcripts by content directly and deliberately does not build a Glob-based "recent files" working set (that shipped a real silent bug — the reference explains why). Its dogfood-hardened prose documents specific fixed false-positives; do not paraphrase it. Known constraints that need no fix are listed in references/adoption-limitations.md.

3. Compute transitions

Current status	Evidence found this scan	Proposed transition
not adopted	yes	adopted
unseen	no	nudged
anything else	no	unchanged, skip silently

4. Preview and wait

## Feature Adoption Check

### Evidence found — proposing "adopted"
- **goal** — 3 sessions

### No evidence yet — proposing "nudged"
- **rewind** — "Restores the conversation to an earlier point..."

### Scan failed — excluded this run
- **btw** — Grep call errored partway through; evidence may exist but couldn't be confirmed
- **fork** — 2 of 5 matched files could not be read and were excluded; the 3 readable files showed no evidence

Approve all, approve one (e.g. "approve goal"), or decline.

Never write anything before this gate.

5. Write approved changes

For each approved change, edit_note with find_replace anchored strictly inside the YAML frontmatter block, never spanning a --- marker (the Sprint-24 safe-edit pattern, avoiding the duplicate-frontmatter bug):

edit_note(
  identifier="main/reference/claude-code-noteworthy-features",
  operation="find_replace",
  find_text="adoption-<slug>: <old-status>",
  content="adoption-<slug>: <new-status>"
)

Re-read the note once afterward to confirm the value actually changed. On any status change, regenerate the local tip cache directly with Write, using this step's own confirmation re-read (not the stale Step-1 catalog) and the shared filter/grammar in references/tip-cache-contract.md. Write to ~/.claude/references/claude-code-nudge-tips.txt — a plain overwrite, matching Mode A's convention. This closes the loop with the SessionStart hook without a second MCP read or a shell-out to Mode A.

6. Report

## Nudge Adoption Complete

Updated: N (goal -> adopted, ...)
Declined: M
Skipped (no change): K

Additional Resources

• references/tip-cache-contract.md — the exclusion rule and cache line grammar both modes use.
• references/evidence-detection.md — the Mode B transcript-scan detection procedure.
• references/adoption-limitations.md — accepted constraints of the transcript-evidence approach.