merge: P6, the evidence pipeline (branch P6, checkpoint ce366408)

The last of the paused branches, from its "not for merge" checkpoint:
extraction in ledger-import (text, pages, page images; capped, caught),
journaled as attachment.text_extracted; dedup by hash with
books.find_attachment and books.consolidate_duplicates; annotations and
books.set_entry_settles; the company record categories; the two fuzz
targets; feature attachment_text. Nineteen files conflicted with the
four P4b merges, resolved as plan 8.0.2 says: P6 retakes schema 18 (it
had taken 16, which S4.3 holds; S5 holds 17); the tool table is 129 and
the destructive count 31; both sides' appends kept with their seams
restored; one B-27 paragraph naming every feature; in the old-books
fixture P6's hand-written reimbursement is entry 7 (its ids collided
with S4.3's invoice); the replay fuzzer's list gains S7's
invoice.written_off; S4.3's issued-PDF test expects the extraction
record P6 journals right after a filing.

One integration defect between S7 and P6, found by the arap property
test and fixed here: under P6's dedup, a write-off whose evidence bytes
were filed already (the same collection letter for a second write-off of
the same invoice) was refused only after its entry had been journaled,
at the final link to the invoice ("already linked"). The write-off now
resolves the dedup before anything is journaled and keeps a link the
record already has to the invoice instead of refusing it; an explicit
existing_attachment_id already on an entry is still refused (S7's
one-receipt-once rule). P6's gate never ran before the pause; it runs on
main after this merge, and its ledger-store -> ledger-import dependency
is the open review point (plan 8.0.1).

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HS8WZziDnyxunC23MUxrLp

crates/ledger-cli/tests/spec_mcp.rs

@@ -822,6 +822,37 @@ fn happy_path(name: &str) -> Mcp {
     );
     assert_eq!(up["existing_attachment_id"], json!(local), "{up}");
 
+    // P6: the evidence pipeline. Find the local receipt by its text, give
+    // it a receipt number, settle nothing, and consolidate (there are no
+    // duplicates here: a preview and a no-op confirm still exercise both
+    // answers).
+    let found = m.ok("books.find_attachment", json!({"text": "local receipt"}));
+    assert_eq!(
+        found["attachments"][0]["attachment_id"],
+        json!(local),
+        "{found}"
+    );
+    let annotated = m.ok(
+        "books.annotate_attachment",
+        json!({"attachment_id": local, "fields": {"receipt_number": 1,
+               "payee": "Landlord", "amount": "12.34", "date": "2026-01-10"}}),
+    );
+    assert_eq!(annotated["next_receipt_number"], 2, "{annotated}");
+    m.ok(
+        "books.find_attachment",
+        json!({"receipt_number": annotated["fields"]["receipt_number"]}),
+    );
+    m.ok(
+        "books.find_attachment",
+        json!({"sha256": ledger_store::journal::sha256_hex(b"a local receipt")}),
+    );
+    m.ok(
+        "books.set_entry_settles",
+        json!({"entry_id": e1, "settles": []}),
+    );
+    m.ok("books.consolidate_duplicates", json!({}));
+    m.ok("books.consolidate_duplicates", json!({"confirmed": true}));
+
     // Reversal: preview, then confirmed.
     let e3 = m.draft(
         "2026-01-20",