Memory Bridge

# Memory Bridge — Cross-Tool Knowledge Browser

You are helping the user browse and compare their Obsidian wiki knowledge filtered by which AI tool originally produced it. The wiki tracks source provenance in `.manifest.json` and page `sources:` frontmatter — this skill surfaces that metadata as a navigable view.

## 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`.
2. Read `$OBSIDIAN_VAULT_PATH/.manifest.json` — this is the source-of-truth for what tool produced what.
3. Read `$OBSIDIAN_VAULT_PATH/index.md` for page titles and one-line descriptions.

## Commands

Parse the user's invocation to determine mode:

| Invocation | Mode |
|---|---|
| `/memory-bridge <tool>` | **Browse** — list all wiki pages sourced from `<tool>` |
| `/memory-bridge <tool> "<topic>"` | **Search** — pages from `<tool>` that mention `<topic>` |
| `/memory-bridge diff` | **Diff** — pages unique to each tool; overlap; blind spots |
| `/memory-bridge diff <tool-a> <tool-b>` | **Diff** — compare two specific tools |
| `/memory-bridge map` | **Map** — full origin matrix: every page × every tool that touched it |

Recognized tool names: `claude`, `codex`, `hermes`, `openclaw`, `copilot`, `pi`, `manual` (hand-written), `ingest` (wiki-ingest documents).

## Step 1: Build the Source Map

Read `.manifest.json`. For each source entry, extract:
- `source_type` — maps to tool name:
  - `claude_conversation`, `claude_memory`, `claude_audit_log`, `claude_desktop_session` → `claude`
  - `codex_rollout`, `codex_index`, `codex_history` → `codex`
  - `hermes_memory`, `hermes_session` → `hermes`
  - `openclaw_memory`, `openclaw_daily_note`, `openclaw_session`, `openclaw_dreams` → `openclaw`
  - `copilot_session`, `copilot_checkpoint`, `copilot_transcript`, `copilot_memory_artifact` → `copilot`
  - `pi_session` → `pi`
  - `document` → `ingest`
  - anything else → `manual`
- `pages_created` and `pages_updated` — the wiki pages that came out of this source

Build a map:

```
tool_pages = {
  "claude": set(pages created/updated by claude sources),
  "codex":  set(pages created/updated by codex sources),
  ...
}
```

A page can appear in multiple tools' sets if multiple tools contributed to it.

## Step 2: Execute the Mode

### Browse Mode

Filter `tool_pages[<tool>]` and present as a grouped list:

```
## Knowledge from <tool> (<N> pages)

### By category
- concepts/ — N pages
- entities/ — N pages
- skills/   — N pages
...

### Pages
| Page | Category | Tags | Last updated |
|------|----------|------|--------------|
| [[page-name]] | concept | tag1, tag2 | 2026-04-10 |
...
```

Read frontmatter for the listed pages (grep for `^(title|category|tags|updated):`) — do not read full page bodies unless the user asks.

### Search Mode

Within the filtered page set, run:
```
grep -l "<topic>" <pages in tool set>
```
Then grep section headers (`^##`) around matches to give context without full reads. Present results as a ranked list with the matching excerpt.

### Diff Mode

Compute:
- `only_in_a` = `tool_pages[a]` − `tool_pages[b]`
- `only_in_b` = `tool_pages[b]` − `tool_pages[a]`
- `shared` = `tool_pages[a]` ∩ `tool_pages[b]`

If no specific tools are given, compare all tools pairwise (limit to pairs wi