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. Read ~/.obsidian-wiki/config to get OBSIDIAN_VAULT_PATH and OBSIDIAN_WIKI_REPO.
2. 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

mkdir -p ~/.obsidian-wiki
date +%s > ~/.obsidian-wiki/.last_update
echo "<stale_count>" > ~/.obsidian-wiki/.pending_delta

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
    - ~/.obsidian-wiki/.last_update
    - ~/.obsidian-wiki/.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

Check if ~/.zshrc already sources wiki-notify.sh. If not, append:

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

Step 4: Run the script once

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

This initializes ~/.obsidian-wiki/.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
• They can run /daily-update anytime to force a sync
• Logs go to /tmp/obsidian-wiki-daily.log