Shadow Frog Meditate Skill for Claude

ShadowFrog Meditate

Shadow hygiene — deduplicate, merge, and resolve conflicts across the

entire .shadow/ knowledge base. Prerequisite: .shadow/ exists with

discoveries.

Why Meditate?

Over time, shadows accumulate noise:

• Duplicates: the same insight written differently by different sessions
• Near-duplicates: one discovery is a subset of another
• Conflicts: two discoveries contradict each other (code may have changed,

or one was wrong)

• Cross-scope duplicates: a per-file discovery and a _cross/ entry

saying the same thing

This noise confuses downstream agents and dilutes signal. Meditate cleans

it up.

Phase 1: Scan

Use parallel subagents to scan the shadow. Each subagent handles a batch

of shadow files.

Scope Optimization

Not every file needs scanning. To reduce cost:

• Skip files with 0-1 discoveries — they can't have internal duplicates
• Focus on files modified since last meditate — check _meta/state.json

last_update_at against file modification times

• Always scan files with 5+ discoveries — highest duplicate risk

For the first meditate after a large dream run, most files will need

scanning. For incremental meditation after small updates, this can

reduce scope by 80%+.

Per-File Scan

For each per-file shadow (e.g., src/auth.py.md):

• Read all discoveries under each ## symbol heading
• For each pair of discoveries under the same symbol, classify:
• Duplicate: same behavioral claim, different wording
• Near-duplicate: one discovery is a subset/refinement of the other
• Conflict: the two discoveries make contradicting claims
• Distinct: genuinely different insights — no action needed
• Record each finding as a structured action (see below)

Scan Output Format

Subagents must output findings as one JSON object per line so the

orchestrator can auto-apply resolutions. This is critical for automation —

prose recommendations require manual interpretation.

{"action": "merge", "file": "src/auth.py.md", "symbol": "authenticate_user", "keep": "- silently returns None on expired tokens...", "remove": "- returns None when token expires...", "merged": "- authenticate_user() silently returns None on expired tokens instead of raising. 3 of 7 callers don't check.\n  _(verified, source: exploration)_", "reason": "duplicate: same claim, different wording"}
{"action": "merge", "file": "src/db.py.md", "symbol": "connect", "keep": "- connection pool exhaustion...", "remove": "- pool runs out...", "merged": "...", "reason": "near-duplicate: first extends second"}
{"action": "conflict", "file": "src/auth.py.md", "symbol": "validate_token", "entry_a": "- raises ValueError...", "entry_b": "- returns False...", "resolution": "verified_a", "reason": "code inspection: line 42 raises ValueError"}
{"action": "conflict", "file": "src/cache.py.md", "symbol": "invalidate", "entry_a": "...", "entry_b": "...", "resolution": "escalate", "reason": "both claims have evidence, needs user input"}
{"action": "move_to_cross", "file": "src/auth.py.md", "symbol": "validate_token", "entry": "- all validators share...", "cross_slug": "shared-validation-pattern", "reason": "cross-scope: involves 4 files"}

Fields:

• action: merge | conflict | move_to_cross | move_from_cross
• file: shadow file path relative to .shadow/
• symbol: the ##/### heading the discovery lives under
• keep: the discovery text to keep (for merge)
• remove: the discovery text to delete (for merge)
• merged: the final merged text (for merge)
• resolution: verified_a | verified_b | escalate (for conflict)
• reason: human-readable explanation

The orchestrator collects all lines, applies merge and conflict

actions automatically, and presents escalate items to the user.

Cross-Scope Scan

After per-file scanning:

• Collect all per-file discoveries into a flat list
• For each _cross/*.md discovery, check if any per-file discovery

makes the same or overlapping claim

• For each _prefs.md preference, check if any per-file discovery

or _cross/ entry duplicates it

• Record cross-scope findings the same way

Scanning Guidelines

• Compare claims semantically, not just textually. "Returns None on

expired tokens" and "Silently returns None when token expires" are

duplicates.

• Two discoveries about the same function but covering different

behaviors are distinct, not duplicates. E.g., "returns None on

expired tokens" vs "uses constant-time comparison" — these are

unrelated observations about the same function.

• Pay attention to Also involves: — two discoveries with overlapping

Also involves: refs are more likely related.

Phase 2: Resolve

Process each finding by type.

Duplicates → Merge

Combine into a single discovery:

• Keep the richer wording (more detail, more context)
• Keep the stronger trust: source: user > source: interaction > source: exploration
• Keep the stronger status: verified > uncertain > refuted
• Merge Also involves: refs (union of both)
• Delete the weaker entry

Example:

BEFORE (two entries under same symbol):
- authenticate_user() returns None on expired tokens.
  _(verified, source: exploration)_
- When the token is expired, authenticate_user silently returns None
  instead of raising. 3 of 7 callers don't check.
  _(verified, source: exploration)_

AFTER (merged):
- authenticate_user() silently returns None on expired tokens instead
  of raising. 3 of 7 callers don't check the return value.
  _(verified, source: exploration)_

Near-Duplicates → Absorb

The broader discovery absorbs the narrower one:

• Expand the broader entry to include any extra detail from the narrower
• Delete the narrower entry
• Preserve the stronger trust/status between the two

Conflicts → Investigate

When two discoveries contradict each other:

• Read the actual source code at the file::symbol location
• Trace the logic to determine which claim is correct
• If needed, write and run a short test script to verify
• Mark the correct claim verified, the incorrect one refuted
• If the incorrect claim was once true but code changed, update it

to reflect the current behavior and mark it verified

If investigation takes more than a few minutes without resolution:

• Keep both discoveries
• Add a note: (conflict unresolved — needs user input)
• Ask the user to clarify at the end of the meditate session

Cross-Scope Duplicates → Place Correctly

When the same discovery exists in both a per-file shadow and _cross/:

• If it involves 3+ files → keep in _cross/, remove from per-file
• If it involves 1-2 files → keep in per-file, remove from _cross/
• Update cross-references in both directions after moving

When a per-file discovery duplicates a _prefs.md entry:

• If it's truly project-wide (not tied to a specific symbol) → keep

in _prefs.md, remove from per-file

• If it's specific to that symbol but happens to match a pref → keep

both (they serve different purposes)

Phase 3: Report

After all resolutions, print a summary:

Meditate Summary
================
  Files scanned:       42
  Duplicates merged:   7
  Near-dupes absorbed: 3
  Conflicts resolved:  2
  Conflicts escalated: 1
  Cross-scope fixed:   2
  Total entries removed: 12

Escalated (needs your input):
  src/auth.py::validate_token
    - "raises ValueError on invalid format" vs "returns False on invalid format"
    Both claims have evidence. Which behavior is correct?

Parallelism

For large shadows (20+ files), use parallel subagents:

• Partition shadow files into batches of ~10 files each
• Launch one subagent per batch for Phase 1 (scan)
• Each subagent outputs JSON-per-line findings (see Scan Output Format)
• Orchestrator collects all JSON lines from all subagents
• Auto-apply merge actions: use edit tool with remove as old_str,

replace keep with merged

• Auto-apply conflict actions where resolution is verified_a or

verified_b — mark the loser refuted

• Collect escalate items for user review
• Run Phase 3 (report)

For smaller shadows, run everything in a single pass — the scan output

format is still useful for traceability.

Dream Archive Hygiene (_dreams/)

Meditate performs consistency checks and field repair on _dreams/. It

does NOT delete or rewrite report prose (those are historical records),

but it DOES fix missing/wrong metadata in the index.

Structural Checks

• Index consistency — verify every folder in _dreams/ has a row in

_dreams/_index.md, and every row in the index has a matching folder.

Fix mismatches (add missing rows, remove orphaned rows).

• Report completeness — each _dreams/<id>/ should contain at minimum

a report.md. Flag any empty directories.

• Stale patches — if base_commit in a report's frontmatter is more

than 100 commits behind current HEAD, add a note to the index:

⚠️ patch may not apply cleanly. Check with:

   git rev-list <base_commit>..HEAD --count 2>/dev/null

• Cross-reference integrity — if a per-file discovery has a

Dream report: _dreams/<id>/ reference, verify that dream folder

exists. Remove dangling references.

Index Field Repair (run after Structural Checks)

Dream subagents sometimes write incomplete index rows (e.g., unknown

category/verdict, generic titles). meditate-repair.py (below)

auto-resolves these by reading each experiment's report.md frontmatter,

manifest.json, and verdict-section signals.

Do NOT hand-edit 50+ rows. Use the script. The agent's job is to

surface what the script CAN'T auto-fix:

• Corrupted reports — when report.md's dream_id (frontmatter or

body) doesn't match the folder name, the report was copy-pasted from

another experiment. The script prints these to stderr and skips them.

Do NOT auto-fix corruption — the content is wrong, not just the ID.

Log them in the meditate summary for user review.

• Ambiguous parent branches — when no manifest.json exists for an

experiment, the script falls back to slug heuristics (-extend,

-fix, -deeper, -improve, -integration, -cleanup, -metrics,

-remaining strongly suggest compounding from a sibling). If the

heuristic match is not high-confidence, flag for user review rather

than guessing.

Applying Index Repairs

SKILL_DIR=""
for DIR in .github/skills/shadow-frog-meditate \
           .claude/skills/shadow-frog-meditate; do
    [ -d "$DIR" ] && SKILL_DIR="$DIR" && break
done

if [ -n "$SKILL_DIR" ] && [ -x "$SKILL_DIR/meditate-repair.py" ]; then
    python3 "$SKILL_DIR/meditate-repair.py"
else
    echo "meditate-repair.py not found; falling back to manual scan." >&2
fi

What it does:

• Backs up .shadow/_dreams/_index.md to .bak first
• Detects corrupted reports (frontmatter dream_id != folder name) and

prints them to stderr — these rows are skipped, you resolve manually

• For every other row with unknown/empty category/verdict/title,

resolves the canonical value from the report's frontmatter, manifest,

or verdict section signals

• Title repair replaces generic forms (raw slug, "Dream Report: <slug>",

"Dream t##: <slug>") with the first # H1 or ## Summary line

Verdict detection order is `manifest > VERDICT_SECTION signals >

whole-body signals`. Dead-end signals are checked BEFORE useful signals

so not useful doesn't match useful.

Idempotent — safe to rerun until output reports 0 repaired.

Do NOT delete dream reports during meditate — only the user decides

what to keep or discard (via Phase 7 review or manual cleanup).

Rules

• Never delete a source: user discovery without asking — user

knowledge is the highest trust. If it conflicts with `source:

exploration`, investigate thoroughly before concluding the user was wrong.

• Preserve Also involves: refs — when merging, take the union.
• Update _index.md after removing entries (discovery counts change).
• Update _meta/state.json — set last_update_type: "meditate".
• Don't touch _prefs.md placement unless a pref is clearly

duplicated verbatim in a per-file shadow.

Format Compliance

**Every merged or rewritten discovery must exactly follow the canonical

format in /shadow-frog** (Discovery Format, Cross-Cutting, Preferences).

Re-read both the original entries and the spec before writing — a

malformed discovery is worse than a duplicate; it breaks the viewer

parser and downstream agents.

Meditate-specific rules:

• When merging, take the union of labels: [...] from both entries.
• When merging, preserve every Also involves: file::symbol from both

entries (union, not intersection).

• Dream report: _dreams/<id>/ references must survive the merge —

re-attach to the merged entry if either original had one.

• Status (verified/uncertain/refuted) is taken from the stronger

source: user ≻ interaction ≻ verified exploration ≻ uncertain.

• Discovery text stays behavioral, not a code summary — preserve the

more behavioral wording when entries differ in style.