Daily Update — Wiki Maintenance Cycle

You run a lightweight maintenance pass over the wiki: check source freshness, refresh the index, update hot.md, and write the state file that the terminal notification reads.

Before You Start

1. Resolve config — follow the Config Resolution Protocol in llm-wiki/SKILL.md (walk up CWD for .env → ~/.obsidian-wiki/config → prompt setup). This gives OBSIDIAN_VAULT_PATH and OBSIDIAN_WIKI_REPO.
2. Derive vault-scoped state dir — all runtime state is scoped to the resolved vault, not global:

   VAULT_ID=$(echo "$OBSIDIAN_VAULT_PATH" | md5sum 2>/dev/null | cut -c1-8 || md5 -q - <<< "$OBSIDIAN_VAULT_PATH" | cut -c1-8)
   STATE_DIR="$HOME/.obsidian-wiki/state/$VAULT_ID"
   mkdir -p "$STATE_DIR"

3. Read $OBSIDIAN_VAULT_PATH/.manifest.json.

Modes

Run Mode (default — triggered by cron or /daily-update)

Execute the maintenance cycle:

Step 1: Source freshness check

Compare each source in .manifest.json against its file's modification time. Classify as:

• Fresh — mtime ≤ ingested_at
• Stale — mtime > ingested_at (new content exists, not yet ingested)
• Missing — source file no longer exists

Step 2: Index refresh

Read $OBSIDIAN_VAULT_PATH/index.md. If any pages in the vault are missing from the index (or vice versa), update the index. Use find $OBSIDIAN_VAULT_PATH -name "*.md" -not -path "*/_*" to enumerate vault pages, then reconcile against the index.

Step 3: hot.md update

Read hot.md. If it's >48h old based on its updated: frontmatter, regenerate it: read the 10 most recently modified wiki pages and write a fresh ~500-word semantic snapshot of what the wiki covers. This keeps the next session's context warm without a full vault crawl.

Step 4: Write state

Write to the vault-scoped $STATE_DIR derived in "Before You Start":

date +%s > "$STATE_DIR/.last_update"
echo "<stale_count>" > "$STATE_DIR/.pending_delta"
echo "$OBSIDIAN_VAULT_PATH" > "$STATE_DIR/.vault_path"

Step 5: Spawn impl-validator

After the cycle, spawn impl-validator as a subagent:

impl-validator check:
  goal: "Daily wiki maintenance — index reconciled, hot.md refreshed, state file written"
  artifacts:
    - $OBSIDIAN_VAULT_PATH/index.md
    - $OBSIDIAN_VAULT_PATH/hot.md
    - $STATE_DIR/.last_update
    - $STATE_DIR/.pending_delta
  checks:
    - Does .last_update contain a recent Unix timestamp (within the last 60 seconds)?
    - Does .pending_delta contain a non-negative integer?
    - Does hot.md have an updated: frontmatter field set to today?
    - Does index.md list at least as many pages as exist in the vault?

Apply any FAILs before logging.

Step 6: Log

Append to $OBSIDIAN_VAULT_PATH/log.md:

- [TIMESTAMP] DAILY-UPDATE fresh=N stale=N missing=N index_added=N hot_refreshed=true|false

Step 7: Report to user

## Daily Wiki Update

- Sources: N fresh · N stale · N missing
- Index: N pages (N added, N removed)
- hot.md: refreshed / up to date

Stale sources (run to sync):
  /wiki-history-ingest claude   — N sessions since last ingest
  /wiki-history-ingest codex    — N sessions since last ingest

Setup Mode (triggered by "set up the daily cron" or "install terminal notification")

Walk the user through first-time setup:

Step 1: Verify script exists

Check that $OBSIDIAN_WIKI_REPO/scripts/daily-update.sh exists and is executable. If not, point the user to it.

Step 2: Install launchd plist

# Replace placeholder in plist
sed "s|OBSIDIAN_WIKI_REPO|$OBSIDIAN_WIKI_REPO|g" \
  "$OBSIDIAN_WIKI_REPO/scripts/com.obsidian-wiki.daily-update.plist" \
  > "$HOME/Library/LaunchAgents/com.obsidian-wiki.daily-update.plist"

# Load it
launchctl load "$HOME/Library/LaunchAgents/com.obsidian-wiki.daily-update.plist"

Step 3: Install terminal notification (optional)

Ask the user: "Do you want a terminal reminder when your wiki is stale? (y/n)" — skip this step if they say no, or if the environment is headless/VPS.

If yes, detect the user's shell and target the right rc file:

SHELL_NAME=$(basename "$SHELL")   # zsh, bash, fish, etc.
case "$SHELL_NAME" in
  zsh)  RC_FILE="$HOME/.zshrc" ;;
  bash) RC_FILE="$HOME/.bashrc" ;;
  *)    echo "Shell '$SHELL_NAME' not auto-detected. Add the source line manually to your shell rc file." ; return ;;
esac

Check if wiki-notify.sh is already sourced in that rc file. If not, append:

echo "" >> "$RC_FILE"
echo "# obsidian-wiki terminal notification" >> "$RC_FILE"
echo "source $OBSIDIAN_WIKI_REPO/scripts/wiki-notify.sh" >> "$RC_FILE"

For Fish shell, source syntax is different — provide the manual instruction:

# Add to ~/.config/fish/config.fish:
bass source $OBSIDIAN_WIKI_REPO/scripts/wiki-notify.sh
# (requires bass plugin, or copy the logic natively)

Step 4: Run the script once

bash "$OBSIDIAN_WIKI_REPO/scripts/daily-update.sh"

This initializes $STATE_DIR/.last_update so the terminal notification works immediately.

Step 5: Confirm

Tell the user:

• The cron runs daily at 9 AM (or on next login if missed)
• Terminal notifications appear when the wiki is >20 hours stale
• State is stored in ~/.obsidian-wiki/state/<vault-id>/ — supports multiple vaults independently
• They can run /daily-update anytime to force a sync
• Logs go to /tmp/obsidian-wiki-daily.log