# Rebuilding Leo's Knowledge Database

## Outcome

Leo should improve by compiling durable source material and reviewed changes
into Postgres. Repeatedly changing prompts or retraining the chat behavior is
not the knowledge system.

There are two different rebuilds:

1. **Exact recovery** restores the current canonical database from a verified
   snapshot. This is working now.
2. **Semantic recompilation** starts from the retained source corpus and the
   reviewed change ledger, then reproduces the canonical rows. This is partly
   recoverable but is not yet complete.

## Exact Recovery: Working

Run:

```bash
.venv/bin/python ops/run_local_canonical_postgres_rebuild.py \
  --dump /private/path/teleo-canonical.dump \
  --source-manifest /private/path/source-manifest.jsonl \
  --output /tmp/teleo-canonical-rebuild-receipt.json
```

The retained 2026-07-14 post-V3 canary restored a fresh, network-isolated
Postgres and then removed it. The restored target matched the source across all
39 manifest tables and all 52,167 rows, with no schema, data, constraint, role,
or performance mismatch. The same source snapshot was subsequently restored to
a disposable private-TLS GCP Cloud SQL clone with exact parity, a bounded
no-send reasoning turn, and verified cleanup. Key rows included:

- 1,837 claims;
- 4,145 sources;
- 4,670 claim-evidence links;
- 4,916 claim edges;
- 17 reasoning tools;
- 29 proposals.

This snapshot includes the completed V3 source canary. Disposable GCP restore
parity is proven at that retained point. Persistent GCP `teleo_canonical`
remains the older staging copy, so ongoing parity, promotion, and production
cutover remain unproven.

This is the fastest disaster-recovery path. It does not require Leo to
re-extract or relearn the corpus.

## Source Recompilation: Current Evidence

Read-only VPS inspection found two retained June import runs. Both point to the
Forgejo-era workspace at `/opt/teleo-eval/workspaces/main` and retained
inventory JSONL files under `/opt/teleo-eval/kb-import/`.

The database still retains:

- `kb_stage.import_runs` for the two inventories;
- staged claims, sources, claim-source links, and claim edges;
- `kb_stage.canonical_mappings` from legacy keys to canonical UUIDs;
- mappings for 1,807 of 1,837 canonical claims;
- mappings for all 4,145 canonical sources.

For the 1,807 mapped claims, current canonical type, text, status, confidence,
tags, and creator match the retained staged rows exactly. Creation timestamps
also follow a recoverable rule: use the legacy timestamp when present and the
mapping timestamp for the eight rows that had no legacy timestamp.

The simple retained-row joins currently reproduce:

- 4,254 of 4,670 canonical evidence links;
- 4,878 of 4,916 canonical edge rows can be accounted for by a staged relation;
  historical duplicate multiplicity still needs an explicit replay rule.

Re-run this aggregate, read-only coverage audit against any restored local
clone:

```bash
.venv/bin/python ops/audit_kb_rebuild_coverage.py \
  --container <restored-local-postgres-container> \
  --database teleo
```

The auditor emits no claim bodies or source excerpts and separates snapshot
recovery from source-derived recompilation readiness.

The remaining gaps are concrete rather than mysterious:

- 30 claims were created after or outside the mapped import;
- 284 mapped source rows do not have a matching retained `staged_sources` row
  and need the original source-synthesis rule or an explicit genesis record;
- 416 evidence links need source-synthesis or later-change provenance;
- 38 edge rows need later-change receipts or explicit replay records;
- old applied proposal rows do not describe every historical canonical write.

This proves that most of the initial database came from the retained file-KB
import path. It does not yet prove a clean blank-database recompile.

## Target Compiler

The durable rebuild model is:

```text
immutable source corpus + file hashes
-> deterministic inventory and classification
-> staged claims, sources, evidence links, and edges
-> stable canonical ID mapping
-> review decisions
-> append-only accepted apply payloads and receipts
-> canonical Postgres
-> render/sync/restart
-> answer benchmark
```

Use the current verified snapshot as **genesis epoch 1**. Preserve its dump,
manifest, source commit, inventory files, mappings, and aggregate rebuild
receipt. Every accepted change after that epoch must carry a replayable strict
apply payload and row-level postflight receipt. This prevents the historical
gap from growing while the old import rules are reconstructed.

The guarded apply CLI now enforces the receipt half of that policy. After a
successful apply it reloads the immutable applied proposal, selects the exact
canonical rows described by the strict payload, binds generated row IDs and
timestamps, hashes the exact executed apply SQL, payload, and rows, and
atomically writes a private mode `0600` receipt. It also supports read-only
recovery for a committed apply whose receipt file was lost, provided every
payload-controlled row still matches the immutable reviewed payload:

```bash
python3 scripts/apply_proposal.py <proposal-uuid> --receipt-only
```

The live VPS recovery canary used strict applied proposal
`00957f6c-9883-4015-95a4-6b09367efb0e`. It recovered exactly one canonical edge,
kept all database counts and the proposal payload hash unchanged, left the Leo
gateway on the same PID with zero restarts, and removed the temporary private
receipt. The full receipt is deliberately not committed because it can contain
claim bodies or source excerpts; the sanitized proof is retained as
`docs/reports/leo-working-state-20260709/kb-apply-replay-receipt-current.json`.

Normal applies mark the SQL hash as `exact_executed_sql`. A later
`--receipt-only` recovery marks it as `reconstructed_current_engine`; it never
pretends the current engine hash is historical proof of the originally executed
program.

This closes replay-receipt loss for new strict applies. The receipt alone does
not retain every column of the proposal ledger, so exact reconstruction also
needs the full approved proposal row, immutable approval snapshot, and final
applied proposal row.

## Genesis Plus Strict Ledger: Working Insert-Only Slice

`ops/run_local_genesis_ledger_rebuild.py` now executes the first exact
genesis-plus-ledger slice in one command:

```bash
.venv/bin/python ops/run_local_genesis_ledger_rebuild.py \
  --genesis-dump /private/path/genesis.dump \
  --genesis-manifest /private/path/genesis-manifest.jsonl \
  --ledger /private/path/ledger.json \
  --ledger-sha256 "$LEDGER_SHA256" \
  --output /tmp/genesis-ledger-rebuild-receipt.json
```

The v1 ledger pins the genesis dump and manifest, final parity manifest,
reconstruction/restore/guard/apply/replay/parity engines, and every ordered
private material file. Each material file contains one existing `kb_apply_replay_receipt`, the
exact full proposal row immediately before apply, its immutable
`kb_proposal_approvals` row, and the exact full proposal row after apply. These
files can contain claim text or source excerpts and must remain private.

The ledger shape is:

```json
{
  "artifact": "teleo_genesis_plus_ledger",
  "contract_version": 1,
  "engine": {
    "reconstruction_command_sha256": "<sha256>",
    "base_rebuild_engine_sha256": "<sha256>",
    "apply_engine_sha256": "<sha256>",
    "replay_receipt_engine_sha256": "<sha256>",
    "guard_prerequisites_sha256": "<sha256>",
    "parity_sql_sha256": "<sha256>"
  },
  "genesis": {
    "dump_sha256": "<sha256>",
    "parity_manifest_sha256": "<sha256>"
  },
  "entries": [{
    "sequence": 1,
    "material": "private/0001.json",
    "sha256": "<material-file-sha256>",
    "replay_material_sha256": "<receipt-replay-material-sha256>"
  }],
  "final_parity": {
    "manifest": "final-manifest.jsonl",
    "sha256": "<sha256>"
  }
}
```

Each referenced material object has exact top-level keys
`artifact`, `contract_version`, `sequence`, `approved_proposal`,
`approval_snapshot`, `applied_proposal`, and `replay_receipt`. Proposal objects
must contain every current `kb_stage.kb_proposals` column; partial envelopes
are rejected.

The command verifies every hash before starting Docker, restores a tmpfs-backed
Postgres with `--network none`, reapplies the current guarded prerequisites,
and proves genesis parity. For each entry it seeds the receipt's exact row IDs
and timestamps in the disposable clone, executes the existing `kb_apply`
payload-bound guard and ledger transition, checks exact proposal and canonical
row readbacks, then verifies the complete final parity manifest. Its public
mode-`0600` receipt contains hashes, IDs, types, counts, parity summaries, and
cleanup proof, but no payloads, rows, SQL, source paths, or command errors.

The exact v1 claim ceiling is intentionally narrow:

- `add_edge`, `attach_evidence`, and `approve_claim` strict receipts execute;
- sequence gaps, hash drift, engine drift, duplicate proposals, and legacy or
  freeform payloads fail before container start;
- `revise_strategy` fails closed because its current receipt omits the prior
  strategies and nodes that the apply engine deactivates or retires;
- full proposal before/after rows are mandatory because the current receipt
  envelope does not retain proposal origin fields or exact `updated_at`;
- this proves only an isolated local reconstruction. It does not touch or prove
  VPS, GCP, Telegram, a live database, or blank-schema source recompilation.

The source compiler now turns one raw artifact, its strict UTF-8 extraction,
and a reviewed extraction manifest into a deterministic, hash-bound
`pending_review` proposal bundle:

```bash
.venv/bin/python scripts/compile_kb_source_packet.py \
  --artifact fixtures/working-leo/document-ingestion-v1.json \
  --text fixtures/working-leo/document-ingestion-v1.json \
  --manifest fixtures/working-leo/source-compiler-manifest-v1.json \
  --output /tmp/working-leo-source-packet-v1.json
```

The compiler verifies artifact and extraction hashes, stable source identity,
current schema taxonomies, unique logical keys, and exact claim/evidence quotes.
It reuses the existing proposal normalizer and staging preflight, but it has no
database connection and executes neither staging nor apply. Its output is the
review packet, not canonical knowledge.

The VPS also exposes a bounded preparation command for one text-like filesystem
document (or a binary artifact with a separately supplied strict UTF-8
extraction):

```bash
teleo-kb prepare-source \
  --artifact /home/teleo/.hermes/profiles/leoclean/state/kb-source-inbox/source.md \
  --identity document:stable-source-id \
  --source-key stable_source_key \
  --source-type article \
  --title "Stable source title" \
  --locator artifact://stable/source-id \
  --output-dir /home/teleo/.hermes/profiles/leoclean/state/kb-source-preparation/source-id
```

It queries canonical claims before extraction, caps a single document at three
new candidates with confidence at or below `0.75`, has the model select
densely numbered non-empty source fragments, resolves those IDs to exact source substrings, records
duplicate judgments, and validates a v2 manifest through the source compiler.
Unknown line IDs are rejected rather than fuzzily matched. It writes private
files only. The extracted atomic proposition is the proposed claim text; exact
source wording remains separately hash-bound as quote and evidence. A separate
`teleo-kb propose-source` call is required to create a `pending_review` row;
neither command applies canonical rows.

The existing full-data clone canary separately proves that a reviewed packet
can create source, claim, evidence, and edge rows and affect later reasoning.
The remaining reconstruction work is to retain complete deltas for mutating
contracts such as `revise_strategy`, backfill or explicitly reject legacy
freeform applies, and extend beyond genesis recovery to a blank-schema source
compiler. The insert-only ledger runner does not prove that every historical
canonical row can be rebuilt semantically from retained sources.

## Definition Of Working

Semantic recompilation is complete only when all of these pass:

1. A command creates a blank database from the retained source corpus plus the
   reviewed ledger.
2. Schema, constraints, roles, table counts, row hashes, and key query results
   match the canonical manifest.
3. Every canonical row traces to a genesis import record or a reviewed apply
   receipt.
4. A new document can be hash-captured, extracted into grounded candidates,
   deduplicated, staged, reviewed, applied in a disposable clone, and read back.
5. After render/sync and restart, Leo answers the related broad question using
   the new rows and cites the source chain.

Until then, exact snapshot recovery is production recovery; source
recompilation is an active build capability, not a finished claim.
