feat(recibos): OCR capture for gas butano and municipal predial

Adds four parsers to the statement intake — GAS TIJUANA plus one per
municipality, because Tijuana, Rosarito and Ensenada issue three
completely different predial documents — and a text-layer fast path for
the born-digital invoices the gas company sends.

Measured against a new corpus of 14 documents / 29 pages: provider read
on 29/29, amount on 26/29, and 21/29 auto-matched against the dev
database (22/29 identified). The eight review cases are all legitimate.

Five things the corpus forced:

- Not every statement is a scan. The gas invoices are born-digital CFDIs
  whose text layer is exact; rasterising them only loses information (one
  sample turned `MEDIDOR: VM01014426` into `ar (LTR): 014420`). The new
  `OcrProvider.textPages` reads the embedded layer via `pdftotext
  -bbox-layout` — same poppler package as `pdftoppm`, so no new
  dependency — and OCR stays the fallback for real scans. Poppler's own
  `<line>` grouping follows text flow rather than the page, so words are
  regrouped by vertical position; without that, a two-column header
  leaves every label separated from the value printed beside it.

- The clave catastral is not two letters and six digits. Position three
  is a letter in 15 of the 932 stored claves, and digitising the whole
  tail mapped a real `MMB01041` to a nonexistent `MM801041`.

- Tijuana predial prints no clave at all. Its only identifier is an
  8-digit municipal account carried in a 32-digit payment barcode, which
  the legacy database never held, so it goes in `meterNumber` alongside
  gas — `accountNumber` holds `DATMEX.predial`, which is not a
  per-property key and must not be overwritten. Those pages start cold
  and are taught by the first confirm.

- On Rosarito and Ensenada the clave is the primary key, not a fallback:
  those receipts print nothing else, so a unique hit auto-matches. On a
  utility bill that merely happens to print one it stays a review hint.

- A misread `$` is the dangerous failure. An Ensenada receipt for
  $2,203.00 OCR'd as `82,203.00`, which would post a charge 37x too large
  and look ordinary in the ledger. Predial amounts now require a literal
  `$` and a page that cannot produce one goes to review.

The scoped match field is now one exported function rather than three
copies of `kind === "GAS" ? ... : ...`, since the lookup, the
blank-service fill and the confirm write-back have to agree or a
reference gets learned into a column nothing searches.

First tests in this package: 23 specs over the parsers and the text-layer
reader, every fixture a verbatim OCR excerpt from a real receipt. Adds
the jest config they need and a build tsconfig so they stay out of dist.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

apps/api/jest.config.js

@@ -0,0 +1,7 @@
+/** @type {import('jest').Config} */
+module.exports = {
+  rootDir: "src",
+  testEnvironment: "node",
+  testRegex: ".*\\.spec\\.ts$",
+  transform: { "^.+\\.ts$": "ts-jest" },
+};

apps/api/nest-cli.json

@@ -3,6 +3,7 @@
   "collection": "@nestjs/schematics",
   "sourceRoot": "src",
   "compilerOptions": {
-    "deleteOutDir": true
+    "deleteOutDir": true,
+    "tsConfigPath": "tsconfig.build.json"
   }
 }

apps/api/src/statements/ocr/ocr.provider.ts

@@ -6,8 +6,10 @@
  * The shipped implementation is self-hosted Tesseract (see tesseract.provider).
  * That choice is evidence-based rather than assumed: run against 46 pages of
  * real scanned CFE, CESPT and Telnor statements, it identified the provider on
- * 46/46 and extracted a usable account reference on 43/46, which is well past
- * the bar for a queue whose whole point is that a human confirms every row. A
+ * 46/46 and extracted a usable account reference on 43/46, and on a later
+ * corpus of 19 scanned municipal predial receipts it read the provider on
+ * 19/19 and an identifier on 18/19 — well past the bar for a queue whose whole
+ * point is that a human confirms every row. A
  * managed document-extraction API (Textract, Document Intelligence, Document
  * AI) fits behind this same interface if per-page accuracy ever proves
  * insufficient, with no schema change — but at 300+ pages/month/company it
@@ -31,10 +33,10 @@ export interface OcrPage {
   /** Full page text, reading order, newline-separated. */
   text: string;
   /**
-   * Word boxes. Needed because two of the three real layouts are *tables* —
-   * the CESPT "RECIBO" prints `No. DE CUENTA` as a column header with the
-   * value in the row beneath it, which line-oriented text cannot associate.
-   * Parsers fall back to geometry for exactly those fields.
+   * Word boxes. Needed because several of the real layouts are *tables* — the
+   * CESPT "RECIBO" prints `No. DE CUENTA` as a column header with the value in
+   * the row beneath it, which line-oriented text cannot associate. Parsers fall
+   * back to geometry for exactly those fields.
    */
   words: OcrWord[];
   /** Mean word confidence across the page, 0..1. */
@@ -48,6 +50,22 @@ export interface OcrProvider {
   renderPages(pdf: Buffer): Promise<Buffer[]>;
   /** OCR a single rendered page image. */
   recognize(pageImage: Buffer): Promise<OcrPage>;
+  /**
+   * Read a PDF's own text layer, one entry per page, `null` where the page has
+   * none worth using.
+   *
+   * Not every statement is a scan. The gas company e-mails born-digital CFDI
+   * invoices whose text is already exact and already positioned — running those
+   * through a rasteriser and a character recogniser can only lose information
+   * (one sample turned `MEDIDOR: VM01014426` into `ar (LTR): 014420`) while
+   * costing about a minute of CPU per page for the privilege. Where the layer
+   * exists it is strictly better input for the same parsers, so it is tried
+   * first and OCR remains the fallback for genuine scans.
+   *
+   * Positions are reported in the same pixel space `recognize` uses, so the
+   * geometric helpers in the parsers work unchanged on either source.
+   */
+  textPages(pdf: Buffer): Promise<(OcrPage | null)[]>;
 }
 
 export const OCR_PROVIDER = Symbol("OCR_PROVIDER");

apps/api/src/statements/ocr/tesseract.provider.spec.ts

@@ -0,0 +1,67 @@
+import { parseBboxLayout } from "./tesseract.provider";
+
+/**
+ * Shaped like real `pdftotext -bbox-layout` output: the gas invoice lays its
+ * header out as two columns of independent text flows, so poppler puts a label
+ * and the value printed beside it in *different* `<line>` elements. Trusting
+ * that grouping is what left `PERIODO FACTURADO` with no value next to it and
+ * every period field empty on a batch whose text was perfectly readable.
+ */
+function word(x: number, y: number, text: string): string {
+  return `<word xMin="${x}" yMin="${y}" xMax="${x + 20}" yMax="${y + 8}">${text}</word>`;
+}
+
+function doc(...lines: string[]): string {
+  return `<doc><page width="612" height="792">${lines
+    .map((l) => `<flow><block><line>${l}</line></block></flow>`)
+    .join("")}</page></doc>`;
+}
+
+/** Enough words on the page to clear the "is this a real text layer" floor. */
+function padding(): string {
+  return Array.from({ length: 50 }, (_, i) => word(10, 400 + i * 10, `w${i}`)).join("");
+}
+
+describe("parseBboxLayout", () => {
+  it("rejoins a label with the value printed beside it in another flow", () => {
+    const [page] = parseBboxLayout(
+      doc(
+        word(20, 100, "PERIODO") + word(45, 100, "FACTURADO:"),
+        word(300, 100.4, "20260630-20260630"),
+        padding(),
+      ),
+      1,
+    );
+    expect(page).not.toBeNull();
+    expect(page!.text).toContain("PERIODO FACTURADO: 20260630-20260630");
+  });
+
+  it("keeps genuinely separate lines apart", () => {
+    const [page] = parseBboxLayout(
+      doc(word(20, 100, "Cuenta:") + word(80, 100, "0900003463"), word(20, 130, "Nombre:"), padding()),
+      1,
+    );
+    expect(page!.text.split("\n")).toContain("Cuenta: 0900003463");
+    expect(page!.text.split("\n")).toContain("Nombre:");
+  });
+
+  it("scales point coordinates into the render's pixel space", () => {
+    // Word boxes have to land in the same coordinate space tesseract reports,
+    // or the geometric helpers the parsers share silently stop finding values.
+    const [page] = parseBboxLayout(doc(word(72, 144, "X") + padding()), 300 / 72);
+    const x = page!.words.find((w) => w.text === "X")!;
+    expect(x.left).toBeCloseTo(300);
+    expect(x.top).toBeCloseTo(600);
+  });
+
+  it("reports no text layer for a scan carrying a few stray glyphs", () => {
+    expect(parseBboxLayout(doc(word(10, 10, "3") + word(40, 10, "of") + word(60, 10, "5")), 1)).toEqual([
+      null,
+    ]);
+  });
+
+  it("decodes the entities poppler escapes", () => {
+    const [page] = parseBboxLayout(doc(word(10, 10, "A&amp;B") + padding()), 1);
+    expect(page!.text).toContain("A&B");
+  });
+});

apps/api/src/statements/ocr/tesseract.provider.ts

@@ -105,6 +105,37 @@ export class TesseractOcrProvider implements OcrProvider {
     });
   }
 
+  /**
+   * `pdftotext -bbox-layout` — the same poppler package `pdftoppm` comes from,
+   * so this costs no extra dependency in the runtime image.
+   *
+   * A page is only accepted when it carries a real text layer. Scanned PDFs
+   * frequently contain a handful of stray glyphs (a scanner watermark, a page
+   * number stamped by the MFP), and treating those as the page's text would
+   * hand every parser an almost-empty string and silently take OCR out of the
+   * loop — so a floor of MIN_TEXT_WORDS words has to be present before the
+   * layer is believed.
+   */
+  async textPages(pdf: Buffer): Promise<(OcrPage | null)[]> {
+    await this.require();
+    return this.scratch(async (dir) => {
+      const src = join(dir, "in.pdf");
+      await writeFile(src, pdf);
+      const out = join(dir, "out.html");
+      try {
+        await run("pdftotext", ["-bbox-layout", src, out]);
+      } catch (err) {
+        this.logger.warn(
+          `pdftotext failed; falling back to OCR for this file: ${(err as Error).message}`,
+        );
+        return [];
+      }
+      // Points to pixels at the render DPI, so word boxes from either source
+      // land in one coordinate space and `valueUnder`'s thresholds hold.
+      return parseBboxLayout(await readFile(out, "utf8"), this.dpi / 72);
+    });
+  }
+
   async recognize(pageImage: Buffer): Promise<OcrPage> {
     await this.require();
     return this.scratch(async (dir) => {
@@ -136,6 +167,130 @@ export class TesseractOcrProvider implements OcrProvider {
   }
 }
 
+/**
+ * Below this many words a "text layer" is scanner debris, not a document.
+ * The real born-digital samples carry 400+ words a page; the scanned ones
+ * carry none at all, so the exact threshold is not delicate.
+ */
+const MIN_TEXT_WORDS = 40;
+
+const ENTITIES: Record<string, string> = {
+  amp: "&",
+  lt: "<",
+  gt: ">",
+  quot: '"',
+  apos: "'",
+};
+
+function decodeEntities(s: string): string {
+  return s.replace(/&(#x?[0-9a-fA-F]+|[a-z]+);/g, (whole, body: string) => {
+    if (body[0] === "#") {
+      const code =
+        body[1] === "x" || body[1] === "X"
+          ? parseInt(body.slice(2), 16)
+          : parseInt(body.slice(1), 10);
+      return Number.isFinite(code) ? String.fromCodePoint(code) : whole;
+    }
+    return ENTITIES[body] ?? whole;
+  });
+}
+
+/**
+ * Turn `pdftotext -bbox-layout`'s XHTML into one OcrPage per PDF page.
+ *
+ * Parsed with regexes rather than an XML library on purpose: the output is
+ * machine-generated by poppler with a fixed element shape (`page` > `flow` >
+ * `block` > `line` > `word`), and the alternative is a parser dependency in
+ * the API for one file format read in one place. Only `page` and `word` are
+ * consulted — see below for why poppler's own `line` grouping is discarded.
+ *
+ * `confidence` is 1 for every word: these are the document's own characters,
+ * not a recognition guess.
+ */
+export function parseBboxLayout(xhtml: string, scale: number): (OcrPage | null)[] {
+  const pages: (OcrPage | null)[] = [];
+
+  for (const pageMatch of xhtml.matchAll(/<page\b[^>]*>([\s\S]*?)<\/page>/g)) {
+    const words: OcrWord[] = [];
+
+    for (const w of pageMatch[1].matchAll(
+      /<word\s+xMin="([\d.eE+-]+)"\s+yMin="([\d.eE+-]+)"\s+xMax="([\d.eE+-]+)"\s+yMax="([\d.eE+-]+)"\s*>([\s\S]*?)<\/word>/g,
+    )) {
+      const text = decodeEntities(w[5]).trim();
+      if (!text) continue;
+      const left = Number(w[1]) * scale;
+      const top = Number(w[2]) * scale;
+      words.push({
+        text,
+        left,
+        top,
+        width: Number(w[3]) * scale - left,
+        height: Number(w[4]) * scale - top,
+        confidence: 1,
+      });
+    }
+
+    pages.push(
+      words.length >= MIN_TEXT_WORDS
+        ? { text: toVisualRows(words), words, confidence: 1 }
+        : null,
+    );
+  }
+
+  return pages;
+}
+
+/**
+ * Reassemble words into the rows a reader sees, left to right.
+ *
+ * Poppler's own `<line>` grouping cannot be used for this. It groups by text
+ * flow, and these invoices lay their fields out as two columns of independent
+ * flows — so `PERIODO FACTURADO:` and the `20260630-20260630` printed beside
+ * it end up in different `<line>` elements, and every label-then-value pattern
+ * in the parsers misses a value that is plainly there on the page. Regrouping
+ * by vertical position restores the adjacency, and matches what tesseract
+ * hands back for the scanned version of the same layout.
+ *
+ * Rows are cut when a word's vertical centre leaves the band established by
+ * the row's first word, which tolerates the sub-pixel baseline differences
+ * between fonts on one line without merging two genuinely separate lines.
+ */
+function toVisualRows(words: OcrWord[]): string {
+  const centre = (w: OcrWord) => w.top + w.height / 2;
+  const sorted = [...words].sort((a, b) => centre(a) - centre(b) || a.left - b.left);
+
+  const rows: OcrWord[][] = [];
+  let current: OcrWord[] = [];
+  let band = 0;
+
+  for (const w of sorted) {
+    if (!current.length) {
+      current = [w];
+      band = centre(w);
+      continue;
+    }
+    // Half the word's own height: tall headings and body text both sit within
+    // their own line's band, and neither reaches into the next one.
+    if (Math.abs(centre(w) - band) <= Math.max(w.height, current[0].height) / 2) {
+      current.push(w);
+    } else {
+      rows.push(current);
+      current = [w];
+      band = centre(w);
+    }
+  }
+  if (current.length) rows.push(current);
+
+  return rows
+    .map((r) =>
+      [...r]
+        .sort((a, b) => a.left - b.left)
+        .map((w) => w.text)
+        .join(" "),
+    )
+    .join("\n");
+}
+
 /**
  * Turn tesseract's TSV into words plus reassembled text.
  *

apps/api/src/statements/parsers/statement-parser.spec.ts

@@ -0,0 +1,194 @@
+import type { OcrPage } from "../ocr/ocr.provider";
+import {
+  detectProvider,
+  normalizeCadastralKey,
+  parseStatement,
+} from "./statement-parser";
+
+/**
+ * Every string in this file is a verbatim excerpt of what the OCR engine
+ * actually returned for a real receipt — misreads, dropped spaces, mangled
+ * accents and all. That is the point: these are the specific ways these five
+ * layouts have been observed to fail, and the assertions pin down what the
+ * parser is supposed to do about each one. Inventing clean input here would
+ * test nothing, because clean input was never the problem.
+ */
+function page(text: string): OcrPage {
+  return { text, words: [], confidence: 0.9 };
+}
+
+describe("detectProvider", () => {
+  it("reads a Rosarito predial receipt as predial, not as a water bill", () => {
+    // "Clave Catastral" is also a CESPT structural marker, so a predial page
+    // whose header OCR'd badly must still not be claimed by the CESPT rule.
+    expect(
+      detectProvider(
+        "e | Clave Catastral. KP-128-105 IMPUESTO PREDIAL ea rita\n" +
+          "TASA | VALOR FISCAL | BIMESTRES | INCISO. | IMPUESTO",
+      ),
+    ).toBe("PREDIAL ROSARITO");
+  });
+
+  it("keeps telling the three municipalities apart by their RFC", () => {
+    expect(detectProvider("R.F.C. ATB-541201-KK2")).toBe("PREDIAL TIJUANA");
+    expect(detectProvider("R.F.C. AMP-981201-HJ4")).toBe("PREDIAL ROSARITO");
+    expect(detectProvider("MEN-540301-9J5")).toBe("PREDIAL ENSENADA");
+  });
+
+  it("does not let the CFE rule claim a gas bill over 'PERIODO FACTURADO'", () => {
+    expect(
+      detectProvider("Orden de Facturación: 000009801640\nPERIODO FACTURADO: 20260630-20260630"),
+    ).toBe("GAS TIJUANA");
+  });
+});
+
+describe("normalizeCadastralKey", () => {
+  it("keeps a letter in the third position instead of digitising it", () => {
+    // `MMB01041` is a real key on file; mapping its B to 8 produced a key that
+    // matches no property at all.
+    expect(normalizeCadastralKey("MM-B01-041", [])).toBe("MMB01041");
+  });
+
+  it("repairs the spurious I tesseract inserts into the prefix", () => {
+    expect(normalizeCadastralKey("MIM-200-010", [])).toBe("MM200010");
+  });
+
+  it("digitises confusable glyphs from position four onward", () => {
+    expect(normalizeCadastralKey("KP-1O8-O45", [])).toBe("KP108045");
+  });
+
+  it("flags a prefix it had to truncate", () => {
+    const notes: string[] = [];
+    expect(normalizeCadastralKey("KPX-128-106", notes)).toBe("KP128106");
+    expect(notes).toHaveLength(1);
+  });
+});
+
+describe("parsePredialTijuana", () => {
+  const TIJUANA = page(
+    "Hats | AYUNTAMIENTO DE TIJUANA, BC $2,613.00 23/01/2026\n" +
+      "y) TELEFONO: 973-7000 R.F.C. ATB-541201-KK2\n" +
+      "ER AÑO VALOR FISCAL TASA IMPUESTO |CONCEPTO IMPORTE\n" +
+      "ED ca 2026 1,207,15778 246 2,969.61 1102 - IMPUESTO PREDIAL 2,969.61\n" +
+      "55164964310126000002613000054192\n" +
+      "se 0 O (54427 [a] | TOTALAPAGAR: 2,613.00\n" +
+      "Dc 1097 : FECHA VENCE : 31/ENE/2026",
+  );
+
+  it("splits the payment barcode into account, deadline and amount", () => {
+    const p = parseStatement(TIJUANA);
+    expect(p.provider).toBe("PREDIAL TIJUANA");
+    expect(p.serviceKind).toBe("PROPERTY_TAX");
+    expect(p.accountRef).toBe("55164964");
+    expect(p.amount).toBe(2613);
+    expect(p.dueDate?.toISOString().slice(0, 10)).toBe("2026-01-31");
+    expect(p.period).toBe("2026");
+  });
+
+  it("reads the printed total even when the space in the label is lost", () => {
+    // The real page OCR'd the label as "TOTALAPAGAR:", and it is that reading
+    // that cross-checks the barcode's amount.
+    expect(parseStatement(TIJUANA).crossChecked).toBe(true);
+  });
+
+  it("refuses to trust a barcode the printed total contradicts", () => {
+    const p = parseStatement(
+      page(
+        "R.F.C. ATB-541201-KK2\n" +
+          "55164964310126000002613000054192\n" +
+          "TOTAL A PAGAR: 9,613.00\nFECHA VENCE : 31/ENE/2026",
+      ),
+    );
+    expect(p.crossChecked).toBe(false);
+    expect(p.notes.join(" ")).toContain("no coincide");
+  });
+});
+
+describe("parsePredialRosarito", () => {
+  it("takes the rounded Total, not the Sub Total printed above it", () => {
+    const p = parseStatement(
+      page(
+        "AYUNTAMIENTO MUNICIPAL DE PLAYAS DE ROSARITO, B.C.\n" +
+          "Ce Clave Catastral: + JR-400-008 7 | IMPUESTO PREDIAL\n" +
+          "SUPERFICIE: 228.31 ZONA 30025 “Redondeo IT049 -$0.39 Sub Total $5,409.39\n" +
+          "¿XTEMPORANEO DESPUES DE: 31/01/2026 Elaboro: MGLG\n" +
+          "Total | $5,409.00\n" +
+          "| Periodo por Pagar: 2026/1 2026/6",
+      ),
+    );
+    expect(p.cadastralKey).toBe("JR400008");
+    expect(p.amount).toBe(5409);
+    expect(p.dueDate?.toISOString().slice(0, 10)).toBe("2026-01-31");
+    expect(p.period).toBe("2026");
+  });
+
+  it("is not fooled by the unspaced 'SubTotal' spelling", () => {
+    // This exact page read $9,624.85 off a receipt for $9,625.00 while the
+    // lookbehind still assumed a space.
+    const p = parseStatement(
+      page(
+        "AMP-981201-HJ4 IMPUESTO PREDIAL\n" +
+          "SUPERFICIE. 367.62 ZONA:30151 | Redondco 17049 $0.15 SubTotal $9,624.85\n" +
+          ": Total | $9,625.00",
+      ),
+    );
+    expect(p.amount).toBe(9625);
+  });
+});
+
+describe("parsePredialEnsenada", () => {
+  const totals = (tail: string) =>
+    page(
+      "IMPRESION MAQUINA REGISTRADORA ez | MUNICIPIO DE ENSENADA\n" +
+        "+7] DATOS. DEL.CAUSANTE alta A pe CLAVE MM-200-010 2 CUENTA\n" +
+        `ES g € S| TOTALES 12,744.47 0.00 0.00 324.56 0.00 13,069.03 ${tail} |`,
+    );
+
+  it("reads the paid total off the TOTALES row however the label OCR'd", () => {
+    expect(parseStatement(totals("TOTA LA A $5,797.00")).amount).toBe(5797);
+    expect(parseStatement(totals("orAL: M7 z] $14,414.00")).amount).toBe(14414);
+    expect(parseStatement(totals("| TOTAL: = $6 246.00")).amount).toBe(6246);
+  });
+
+  it("reports no amount rather than one whose $ was misread as an 8", () => {
+    // `TOTAL: A 82,203.00` is a $2,203.00 receipt. Posting $82,203 would look
+    // entirely ordinary in the ledger, so this page must go to review instead.
+    const p = parseStatement(totals("TOTAL: A 82,203.00"));
+    expect(p.amount).toBeNull();
+    expect(p.notes.join(" ")).toContain("capturarlo a mano");
+  });
+
+  it("never falls back to the assessed total on the same row", () => {
+    expect(parseStatement(totals("yo: se TE= 58/4690]")).amount).toBeNull();
+  });
+});
+
+describe("parseGas", () => {
+  const gas = (...cuentas: string[]) =>
+    page(
+      "GTI4608032K2 COMPAÑIA DE GAS DE TIJUANA\n" +
+        "Fecha de Vencimiento: 2026/08/08\n" +
+        cuentas.map((c) => `Cuenta: ${c}`).join("\n") +
+        "\nPERIODO FACTURADO: 20260630-20260630\nTOTAL A PAGAR: $275.82",
+    );
+
+  it("strips the printed leading zero to the stored account number", () => {
+    const p = parseStatement(gas("0900003463", "0900003463", "0900003463"));
+    expect(p.serviceKind).toBe("GAS");
+    expect(p.accountRef).toBe("900003463");
+    expect(p.amount).toBe(275.82);
+    expect(p.dueDate?.toISOString().slice(0, 10)).toBe("2026-08-08");
+    expect(p.period).toBe("2026-06");
+    expect(p.crossChecked).toBe(true);
+  });
+
+  it("takes the majority reading but still sends a disagreement to review", () => {
+    const p = parseStatement(gas("0900003463", "0900003463", "0900003468"));
+    expect(p.accountRef).toBe("900003463");
+    expect(p.crossChecked).toBe(false);
+  });
+
+  it("claims no cross-check from a single printing", () => {
+    expect(parseStatement(gas("0900003463")).crossChecked).toBeNull();
+  });
+});

apps/api/src/statements/parsers/statement-parser.ts

@@ -7,7 +7,11 @@ import type { OcrPage, OcrWord } from "../ocr/ocr.provider";
  * like with like and never has to know about provider-specific formatting.
  */
 export interface ParsedStatement {
-  /** "CFE" | "CESPT" | "TELNOR", or null when no parser claimed the page. */
+  /**
+   * "CFE" | "CESPT" | "TELNOR" | "GAS TIJUANA" | "PREDIAL TIJUANA" |
+   * "PREDIAL ROSARITO" | "PREDIAL ENSENADA", or null when no parser claimed
+   * the page.
+   */
   provider: string | null;
   serviceKind: ServiceKind | null;
   accountRef: string | null;
@@ -90,6 +94,16 @@ function firstMatch(text: string, patterns: RegExp[]): string | null {
   return null;
 }
 
+/** Every capture of `pattern` across the page, in order. */
+function allMatches(text: string, pattern: RegExp): string[] {
+  const out: string[] = [];
+  const re = new RegExp(pattern.source, pattern.flags.includes("g") ? pattern.flags : `${pattern.flags}g`);
+  for (const m of text.matchAll(re)) {
+    if (m[1]) out.push(m[1].trim());
+  }
+  return out;
+}
+
 const MONTHS: Record<string, number> = {
   ENE: 0, FEB: 1, MAR: 2, ABR: 3, MAY: 4, JUN: 5,
   JUL: 6, AGO: 7, SEP: 8, OCT: 9, NOV: 10, DIC: 11,
@@ -104,15 +118,16 @@ export function parseDate(raw: string | null | undefined): Date | null {
   let m = s.match(/^(\d{1,2})\/(\d{1,2})\/(\d{4})$/);
   if (m) return utc(+m[3], +m[2] - 1, +m[1]);
 
-  // 22-JUL-2026  /  22 JUN 26
-  m = s.match(/^(\d{1,2})[-\s]([A-Z]{3})[A-Z]*[-\s](\d{2,4})$/);
+  // 22-JUL-2026  /  22 JUN 26  /  31/ENE/2026 (Tijuana predial)
+  m = s.match(/^(\d{1,2})[-\s/]([A-Z]{3})[A-Z]*[-\s/](\d{2,4})$/);
   if (m && MONTHS[m[2]] !== undefined) {
     const y = m[3].length === 2 ? 2000 + +m[3] : +m[3];
     return utc(y, MONTHS[m[2]], +m[1]);
   }
 
-  // 2026-07-22 (already normalised, e.g. decoded from a barcode)
-  m = s.match(/^(\d{4})-(\d{2})-(\d{2})$/);
+  // 2026-07-22 (already normalised, e.g. decoded from a barcode) and the
+  // 2026/08/08 the gas bill prints — same field order, different separator.
+  m = s.match(/^(\d{4})[-/](\d{2})[-/](\d{2})$/);
   if (m) return utc(+m[1], +m[2] - 1, +m[3]);
 
   return null;
@@ -174,9 +189,30 @@ const BRAND: [string, RegExp][] = [
   ["CFE", /comisi[oó]n federal de electricidad|CFE.?contigo|Suministrador de Servicios/i],
   ["CESPT", /CESPT|COMISI[OÓ]N ESTATAL DE SERVICIOS/i],
   ["TELNOR", /TELNOR|TELEFONOS DEL NOROESTE/i],
+  ["GAS TIJUANA", /COMPA[ÑN][IÍ]?A\s*DE\s*GAS\s*DE\s*TIJUANA|bajagas/i],
+  // The municipal RFCs are the single most reliable discriminator on a predial
+  // receipt: they are printed in a clean monospaced run on every layout, they
+  // never change, and they say which of the three city treasuries issued the
+  // page — which the wordmarks alone do not, since a Tijuana receipt also
+  // carries "PLAYAS DE TIJUANA" and a Rosarito one "TIJUANA ENSENADA".
+  ["PREDIAL TIJUANA", /AYUNTAMIENTO\s*DE\s*TIJUANA|ATB.?541201/i],
+  ["PREDIAL ROSARITO", /AYUNTAMIENTO\s*MUNICIPAL\s*DE\s*PLAYAS\s*DE\s*ROSARITO|AMP.?981201|rosarito\.gob/i],
+  ["PREDIAL ENSENADA", /MUNICIPIO\s*DE\s*ENSENADA|MEN.?540301/i],
 ];
 
+/**
+ * The predial rules come first because a Rosarito receipt prints "Clave
+ * Catastral" as a boxed label — the very string the CESPT structural rule
+ * looks for — so a page whose municipal header failed to OCR would otherwise
+ * be claimed as a water bill and matched against the wrong column entirely.
+ * "IMPUESTO PREDIAL" appears on all three municipal layouts and on none of the
+ * utility ones, so it is the safe first question to ask.
+ */
 const LAYOUT: [string, RegExp][] = [
+  ["PREDIAL TIJUANA", /IMPUESTO\s*PREDIAL[\s\S]*?(?:CERTIFICACION\s*DE\s*CAJA|PASEO\s*DEL\s*CENTENARIO|PAGA\s*TU\s*PREDIAL)/i],
+  ["PREDIAL ENSENADA", /(?:IMPUESTO\s*PREDIAL[\s\S]*?TRANSPENINSULAR)|(?:IMPRESION\s*MAQUINA\s*REGISTRADORA)/i],
+  ["PREDIAL ROSARITO", /IMPUESTO\s*PREDIAL/i],
+  ["GAS TIJUANA", /Orden\s*de\s*Facturaci[oó]n|FACTOR\s*DE\s*PRESI[OÓ]N|GAS\s*LP/i],
   ["CFE", /NO\.?\s*DE\s*SERVICIO|L[IÍ]MITE\s*DE\s*PAGO|PERIODO\s*FACTURADO/i],
   ["CESPT", /SALDO\s+CORRIENTE|CLAVE\s*CATASTRAL|No\.?\s*DE\s*CUENTA/i],
   ["TELNOR", /Mes\s*de\s*Facturaci[oó]n|Pagar\s*antes\s*de/i],
@@ -364,10 +400,315 @@ function parseTelnor(page: OcrPage): ParsedStatement {
   };
 }
 
+// --- GAS (Compañía de Gas de Tijuana / bajagas) ------------------------------
+
+/**
+ * These arrive as born-digital CFDI PDFs rather than scans, so the text layer
+ * (see `TesseractOcrProvider.textPages`) usually reads them exactly and the
+ * patterns below only have to be tolerant enough for the scanned case.
+ *
+ * The account number is printed three times — supply address, fiscal data, and
+ * the payment stub at the foot — which is a free cross-check: three readings
+ * that agree are near-certainly right, and any disagreement means one of them
+ * was misread and the page deserves a human glance.
+ *
+ * `Cuenta` is what the matcher compares, not `Contrato`. The migration
+ * recovered gas references out of `PropertyService.notes` into `meterNumber`
+ * and what sat there is the 9-digit account (`900003463`), printed here with a
+ * leading zero as `0900003463`.
+ */
+function parseGas(page: OcrPage): ParsedStatement {
+  const text = page.text;
+  const notes: string[] = [];
+
+  const seen = allMatches(text, /Cuenta\s*[:;.]?\s*([0-9OIlSBD]{6,12})/i).map((s) =>
+    toDigits(s).replace(/^0+/, ""),
+  );
+  const distinct = [...new Set(seen.filter(Boolean))];
+
+  let accountRef: string | null = null;
+  let crossChecked: boolean | null = null;
+  if (distinct.length === 1) {
+    accountRef = distinct[0];
+    if (seen.length > 1) crossChecked = true;
+  } else if (distinct.length > 1) {
+    // Majority wins — the stub and the two address blocks print the same
+    // number, so a single divergent reading is the misread one. It still goes
+    // to review: `crossChecked: false` is what keeps the batch from
+    // auto-matching a number one of three readings disagreed with.
+    const tally = new Map<string, number>();
+    for (const s of seen) tally.set(s, (tally.get(s) ?? 0) + 1);
+    accountRef = [...tally.entries()].sort((a, b) => b[1] - a[1])[0][0];
+    crossChecked = false;
+    notes.push(`el número de cuenta se leyó de ${distinct.length} formas distintas (${distinct.join(", ")})`);
+  }
+
+  const amount = money(
+    firstMatch(text, [
+      /TOTAL\s*A\s*PAGAR\s*[:;.]?\s*\$\s*([\d,]+\.\d{2})/i,
+      /Total\s*a\s*pagar\s*[:;.]?\s*\$\s*([\d,]+\.\d{2})/i,
+    ]),
+  );
+
+  // `20260630-20260630` — the range the bill was cut for. Both ends are the
+  // same reading date on every sample, so the period is reported as the ISO
+  // month rather than a range no ledger row would ever be searched by.
+  const facturado = firstMatch(text, [/PERIODO\s*FACTURADO\s*[:;.]?\s*(\d{8})\s*-\s*\d{8}/i]);
+  const period = facturado ? `${facturado.slice(0, 4)}-${facturado.slice(4, 6)}` : null;
+
+  return {
+    provider: "GAS TIJUANA",
+    serviceKind: "GAS",
+    accountRef: accountRef || null,
+    cadastralKey: null,
+    amount,
+    dueDate: parseDate(
+      firstMatch(text, [/Fecha\s*de\s*Vencimiento\s*[:;.]?\s*(\d{4}\s*\/\s*\d{2}\s*\/\s*\d{2})/i])?.replace(
+        /\s/g,
+        "",
+      ),
+    ),
+    period,
+    crossChecked,
+    notes,
+  };
+}
+
+// --- PREDIAL (municipal property tax) ---------------------------------------
+
+/**
+ * Normalise a printed clave catastral to the eight-character form
+ * `Property.cadastralKey` holds. The municipalities print it grouped
+ * (`KP-128-106`, `MM-B01-041`); the stored value drops the separators
+ * (`KP128106`, `MMB01041`).
+ *
+ * The shape is *not* two letters and six digits, which is the assumption that
+ * has to be resisted here. Across the 932 distinct claves on file, characters
+ * four through eight are digits without exception, but the third is a digit in
+ * 917 of them and one of `A`, `B`, `H`, `T` in the other fifteen. Running the
+ * whole tail through `toDigits` — which maps `B` to `8` — is what turned a real
+ * `MMB01041` into a nonexistent `MM801041`, so only positions four onward get
+ * that treatment and a letter in the third position is kept as printed.
+ *
+ * That leaves a genuine ambiguity at that one position: a `B` there might be a
+ * misread `8`, and 34 stored claves do carry an `8` there against six with a
+ * `B`. It is left as read rather than guessed, because a page that fails to
+ * match lands in the review queue where a human fixes it in seconds, while a
+ * page that matches the wrong property posts a charge to the wrong customer.
+ *
+ * The two-letter prefix is the other fragile part. Tesseract inserts a spurious
+ * `I` into letter pairs with some regularity — a real `MM-200-010` came back as
+ * `MIM-200-010` — so a run longer than two letters has its `I`/`L` dropped
+ * first, which recovers exactly that case. Anything still not two letters is
+ * truncated and flagged, because a wrong prefix silently matches the wrong
+ * property or, more often, nothing at all.
+ */
+export function normalizeCadastralKey(
+  raw: string,
+  notes: string[],
+): string | null {
+  const m = raw.match(/^([A-Za-z|]{2,5})[-\s]?([A-Za-z0-9|]{3})[-\s]?([0-9OIlSBD]{3})$/);
+  if (!m) return null;
+
+  let letters = m[1].toUpperCase().replace(/[^A-Z]/g, "");
+  if (letters.length > 2) {
+    const stripped = letters.replace(/[IL]/g, "");
+    if (stripped.length === 2) {
+      letters = stripped;
+    } else {
+      letters = letters.slice(0, 2);
+      notes.push(`la clave catastral se leyó como "${m[1]}"; se tomó "${letters}"`);
+    }
+  }
+  if (letters.length !== 2) return null;
+
+  const third = m[2][0].toUpperCase();
+  const tail =
+    (/[A-Z]/.test(third) ? third : toDigits(third)) +
+    toDigits(m[2].slice(1)) +
+    toDigits(m[3]);
+
+  return tail.length === 6 ? letters + tail : null;
+}
+
+/** The grouped clave as printed, anchored to its label when one survived OCR. */
+const GROUPED_CLAVE = "[A-Z|]{2,5}-[A-Z0-9OIlSBD]{3}-[0-9OIlSBD]{3}";
+
+function findCadastralKey(text: string, notes: string[]): string | null {
+  const labelled = firstMatch(text, [
+    new RegExp(`Clave\\s*Catastral\\s*[^A-Z0-9]{0,8}(${GROUPED_CLAVE})`, "i"),
+    new RegExp(`CLAVE\\s*[^A-Z0-9]{0,8}(${GROUPED_CLAVE})`, "i"),
+  ]);
+  if (labelled) return normalizeCadastralKey(labelled, notes);
+
+  // Ensenada's label ("CLAVE") lands inside a table header that OCRs into
+  // noise more often than not, so the bare grouped shape is accepted as a
+  // fallback. It is distinctive enough — two letters and two three-character
+  // groups joined by hyphens appears nowhere else on these pages.
+  const bare = firstMatch(text, [new RegExp(`\\b(${GROUPED_CLAVE})\\b`)]);
+  return bare ? normalizeCadastralKey(bare, notes) : null;
+}
+
+/**
+ * Tijuana: a "CERTIFICACIÓN DE CAJA" whose payment barcode is one 32-digit run
+ * of `account(8) + due date(DDMMYY) + amount(9) + folio(9)`, verified against
+ * all five sample pages. Municipal totals are whole pesos (the receipt itself
+ * carries a "Redondeo" line), so the barcode amount needs no decimal point.
+ *
+ * No clave catastral is printed anywhere on this layout — the 8-digit
+ * municipal account is the only identifier, and it is not a number the legacy
+ * database ever held. Until a reviewer confirms one, every Tijuana page lands
+ * in review; confirming teaches the matcher (see `learnAccountRefs`) so the
+ * same property matches itself next year.
+ */
+function parsePredialTijuana(page: OcrPage): ParsedStatement {
+  const text = page.text;
+  const notes: string[] = [];
+
+  const barcode = text.match(/(?<![0-9OIlSBD])([0-9OIlSBD]{32})(?![0-9OIlSBD])/);
+  const printedTotal = money(
+    firstMatch(text, [/TOTAL\s*A?\s*PAGAR\s*[:;.]?\s*\$?\s*([\d,]+\.?\d{0,2})/i]),
+  );
+
+  let accountRef: string | null = null;
+  let amount: number | null = printedTotal;
+  let dueDate: Date | null = null;
+  let crossChecked: boolean | null = null;
+
+  if (barcode) {
+    const run = toDigits(barcode[1]);
+    const d = run.slice(8, 14);
+    const fromBarcode = Number(run.slice(14, 23));
+    accountRef = run.slice(0, 8);
+    dueDate = parseDate(`20${d.slice(4, 6)}-${d.slice(2, 4)}-${d.slice(0, 2)}`);
+    notes.push("cuenta, importe y vencimiento leídos del código de barras");
+
+    if (printedTotal != null) {
+      // Guarding the money, not the account number: the printed total is the
+      // figure a human would key, so when the two disagree one of them is a
+      // misread peso amount and nothing should post unreviewed.
+      crossChecked = Math.abs(printedTotal - fromBarcode) < 0.5;
+      if (!crossChecked) {
+        notes.push(
+          `el total impreso (${printedTotal}) no coincide con el código de barras (${fromBarcode})`,
+        );
+      }
+    }
+    if (amount == null) amount = fromBarcode;
+  }
+
+  if (!dueDate) {
+    dueDate = parseDate(
+      firstMatch(text, [/FECHA\s*VENCE\s*[:;.]?\s*(\d{1,2}\/\w{3}\/\d{4})/i]),
+    );
+  }
+
+  return {
+    provider: "PREDIAL TIJUANA",
+    serviceKind: "PROPERTY_TAX",
+    accountRef: accountRef || null,
+    cadastralKey: null,
+    amount,
+    dueDate,
+    // The fiscal year, which is what the legacy ledger's `period` holds for
+    // predial ("2026" is its single most common value). It is read from the
+    // assessment table's year column, and failing that from the deadline: a
+    // predial bill for year N falls due on 31 January of year N.
+    period:
+      firstMatch(text, [/VALOR\s*FISCAL[\s\S]{0,160}?\b(20\d{2})\b/i]) ??
+      (dueDate ? String(dueDate.getUTCFullYear()) : null),
+    crossChecked,
+    notes,
+  };
+}
+
+/**
+ * Rosarito: a wide "CERTIFICACIÓN DE CAJA" keyed by clave catastral, with no
+ * account number of its own — the clave is the identifier, which is exactly
+ * what `Property.cadastralKey` holds, so these match on the first pass.
+ *
+ * The total is read with a negative lookbehind on "Sub": the receipt prints
+ * `Sub Total $5,409.39` (before the peso rounding) directly above
+ * `Total $5,409.00`, and taking the first "Total" on the page books 39 cents
+ * that the municipality did not charge. The lookbehind allows zero spaces
+ * because the label prints both ways — `Sub Total` on one sample and
+ * `SubTotal` on the next, and the tight one is what slipped past a fixed
+ * `Sub\s` and read $9,624.85 off a receipt for $9,625.00.
+ */
+function parsePredialRosarito(page: OcrPage): ParsedStatement {
+  const notes: string[] = [];
+  const text = page.text;
+
+  return {
+    provider: "PREDIAL ROSARITO",
+    serviceKind: "PROPERTY_TAX",
+    accountRef: null,
+    cadastralKey: findCadastralKey(text, notes),
+    amount: money(firstMatch(text, [/(?<!Sub\s{0,3})Total\s*[|:;.]?\s*\$\s*([\d,]+\.\d{2})/i])),
+    // "EXTEMPORANEO DESPUES DE: 31/01/2026" — the leading E is regularly eaten
+    // by the box rule printed over it, so the anchor starts at "XTEMPORANEO".
+    dueDate: parseDate(
+      firstMatch(text, [/XTEMPOR[AÁ]NEO\s*DESPU[EÉ]S\s*DE\s*[:;.]?\s*(\d{2}\/\d{2}\/\d{4})/i]),
+    ),
+    period: firstMatch(text, [/Periodo\s*por\s*Pagar\s*[:;.]?\s*(20\d{2})/i]),
+    crossChecked: null,
+    notes,
+  };
+}
+
+/**
+ * Ensenada: a dot-matrix "IMPRESION MAQUINA REGISTRADORA" statement, by some
+ * distance the worst-scanning of the three. Matching is by clave catastral.
+ *
+ * The amount is read positionally rather than by label, because the label does
+ * not survive: across five real pages the same word came back as `TOTAL:`,
+ * `TOTA LA A` and `orAL:`. What is stable is the row — the summary line that
+ * starts `TOTALES` carries the assessed figures across it and the amount
+ * actually paid last, at the right margin.
+ *
+ * That last figure must carry a literal `$`. On a real sample the paid total
+ * printed as `TOTAL: A $2,203.00` and OCR'd as `TOTAL: A 82,203.00` — the
+ * dollar sign read as an 8, a mistake that would post a $2,203 charge as
+ * $82,203 and look entirely ordinary in the ledger. Requiring the `$` costs
+ * that page its amount and sends it to review, which is the only acceptable
+ * failure here. The unprefixed figures earlier on the row are deliberately not
+ * a fallback: they are the tax assessed before the early-payment discount, not
+ * what was paid.
+ */
+function parsePredialEnsenada(page: OcrPage): ParsedStatement {
+  const notes: string[] = [];
+  const text = page.text;
+
+  const totalsRow = text.split("\n").find((l) => /TOTALES/i.test(l)) ?? "";
+  const figures = allMatches(totalsRow, /\$\s*(\d[\d,.\s]*\.\d{2})/);
+  const amount = figures.length ? money(figures[figures.length - 1]) : null;
+  if (amount == null) {
+    notes.push("no se pudo leer el importe con certeza; capturarlo a mano");
+  }
+
+  return {
+    provider: "PREDIAL ENSENADA",
+    serviceKind: "PROPERTY_TAX",
+    accountRef: null,
+    cadastralKey: findCadastralKey(text, notes),
+    amount,
+    // This layout prints no payment deadline at all — it is a receipt for a
+    // payment already made at the municipal window.
+    dueDate: null,
+    period: firstMatch(text, [/A[ÑN]O\s*[\s\S]{0,60}?\b(20\d{2})\b/i]),
+    crossChecked: null,
+    notes,
+  };
+}
+
 const PARSERS: Record<string, (page: OcrPage) => ParsedStatement> = {
   CFE: parseCfe,
   CESPT: parseCespt,
   TELNOR: parseTelnor,
+  "GAS TIJUANA": parseGas,
+  "PREDIAL TIJUANA": parsePredialTijuana,
+  "PREDIAL ROSARITO": parsePredialRosarito,
+  "PREDIAL ENSENADA": parsePredialEnsenada,
 };
 
 const EMPTY: ParsedStatement = {

apps/api/src/statements/statement-matcher.service.ts

@@ -32,12 +32,27 @@ export interface MatchResult {
  * person. Names are displayed for the reviewer to sanity-check, and are never
  * an input to matching.
  */
-@Injectable()
-export class StatementMatcherService {
-  constructor(private readonly prisma: PrismaService) {}
-
-  /** Which PropertyService column a given kind's statements actually print. */
-  private fieldFor(kind: ServiceKind): "accountNumber" | "meterNumber" | null {
+/**
+ * Which `PropertyService` column a given kind's statements actually print.
+ *
+ * Exported because the same answer governs three places that must agree: the
+ * lookup here, the blank-service fill on review, and the write-back on confirm.
+ * When they disagree, a reference gets learned into a column nothing searches,
+ * and the same page returns to the review queue every month forever.
+ *
+ * `meterNumber` is doing double duty for the two kinds whose printed reference
+ * DATMEX never held in `accountNumber`:
+ *   - GAS, where the number lived in free-text notes, and
+ *   - PROPERTY_TAX, where `accountNumber` holds DATMEX.predial — a 3-4 digit
+ *     office file number that is neither unique nor printed on any statement.
+ *     The Tijuana municipal receipt prints an 8-digit account and no clave
+ *     catastral at all, so it needs a column of its own; overwriting the legacy
+ *     predial numbers to make room would destroy the only link back to the
+ *     original records.
+ */
+export function scopedRefField(
+  kind: ServiceKind,
+): "accountNumber" | "meterNumber" | null {
   switch (kind) {
     case "ELECTRIC": // CFE "NO. DE SERVICIO" -> DATMEX.rpu
     case "WATER": // CESPT "Cuenta" / "No. DE CUENTA" -> DATMEX.agua
@@ -45,17 +60,18 @@ export class StatementMatcherService {
     case "FEDERAL_ZONE":
     case "CABLE":
       return "accountNumber";
-      case "GAS": // no account column in DATMEX; the number lived in notes
+    case "GAS": // bajagas "Cuenta" -> recovered from notes into meterNumber
+    case "PROPERTY_TAX": // Tijuana's 8-digit municipal account
       return "meterNumber";
-      // PROPERTY_TAX deliberately has no scoped column: what its
-      // accountNumber holds is DATMEX.predial, which is neither unique nor
-      // printed on any statement. Predial bills match on the clave catastral
-      // alone — see matchByCadastralKey.
     default:
       return null;
   }
 }
 
+@Injectable()
+export class StatementMatcherService {
+  constructor(private readonly prisma: PrismaService) {}
+
   async match(parsed: ParsedStatement, expectedKind: ServiceKind): Promise<MatchResult> {
     const kind = parsed.serviceKind ?? expectedKind;
 
@@ -68,33 +84,39 @@ export class StatementMatcherService {
       );
     }
 
-    const field = this.fieldFor(kind);
+    const field = scopedRefField(kind);
 
     if (field && parsed.accountRef) {
       const hit = await this.byServiceField(kind, field, parsed.accountRef);
       if (hit) return hit;
     }
 
-    // Secondary key. The clave catastral is printed on CESPT bills as well as
-    // predial ones, so it rescues a page whose account number did not OCR —
-    // which happened on real samples, where the clave read cleanly and the
-    // account number did not.
+    // The clave catastral is printed on CESPT bills as well as predial ones, so
+    // it rescues a page whose account number did not OCR — which happened on
+    // real samples, where the clave read cleanly and the account number did
+    // not. On the Rosarito and Ensenada predial layouts it is not a rescue at
+    // all but the only identifier the receipt carries, so a unique hit there is
+    // as good as any account-number match and is treated as one.
     if (parsed.cadastralKey) {
-      const hit = await this.byCadastralKey(kind, parsed.cadastralKey);
+      const primary = kind === "PROPERTY_TAX" && !parsed.accountRef;
+      const hit = await this.byCadastralKey(kind, parsed.cadastralKey, primary);
       if (hit) return hit;
     }
 
     if (!field && !parsed.cadastralKey) {
+      return this.unmatched(`no hay campo de búsqueda definido para ${kind}`);
+    }
+    if (!parsed.accountRef && !parsed.cadastralKey) {
       return this.unmatched(
         kind === "PROPERTY_TAX"
-          ? "el predial sólo se puede identificar por clave catastral y no se leyó ninguna"
-          : `no hay campo de búsqueda definido para ${kind}`,
+          ? "no se leyó ni la clave catastral ni la cuenta municipal"
+          : "no se pudo leer la referencia de la cuenta",
       );
     }
     return this.unmatched(
       parsed.accountRef
         ? `no se encontró ningún servicio de ${kind} con la referencia ${parsed.accountRef}`
-        : "no se pudo leer la referencia de la cuenta",
+        : `no se encontró ninguna propiedad con la clave catastral ${parsed.cadastralKey}`,
     );
   }
 
@@ -145,6 +167,8 @@ export class StatementMatcherService {
   private async byCadastralKey(
     kind: ServiceKind,
     key: string,
+    /** True when the clave is the identifier the statement was issued against. */
+    primary: boolean,
   ): Promise<MatchResult | null> {
     const props = await this.prisma.property.findMany({
       where: { cadastralKey: key },
@@ -174,15 +198,21 @@ export class StatementMatcherService {
       };
     }
 
-    // The clave identifies the property with certainty, but it is a *secondary*
-    // key: it was not the number the statement was issued against. Left for
-    // review so the confirm also teaches the matcher the account number, rather
-    // than the same page needing the fallback again next month.
+    // When the clave is the *secondary* key — a utility bill that also happens
+    // to print it — the page is left for review, because the clave was not the
+    // number the statement was issued against and confirming is what teaches
+    // the matcher the account number for next month. When it is the primary key
+    // (Rosarito and Ensenada predial, which print nothing else), a unique hit
+    // is a real match and there is no second number to learn.
     return {
       propertyServiceId: candidates[0].propertyServiceId ?? null,
       customerId: candidates[0].customerId,
-      note: `identificado por clave catastral ${key}; confirme para registrar también el número de cuenta`,
-      confident: false,
+      note: primary
+        ? `coincidencia exacta por clave catastral ${key}`
+        : `identificado por clave catastral ${key}; confirme para registrar también el número de cuenta`,
+      // A clave with no service row of the right kind behind it still needs a
+      // human: there is nothing to attach the posting to.
+      confident: primary && candidates[0].propertyServiceId != null,
       candidates,
     };
   }

apps/api/src/statements/statements.service.ts

@@ -16,7 +16,7 @@ import { BillingService } from "../billing/billing.service";
 import type { UploadedFileLike } from "../storage/upload-file";
 import { OCR_PROVIDER, type OcrProvider } from "./ocr/ocr.provider";
 import { parseStatement } from "./parsers/statement-parser";
-import { StatementMatcherService } from "./statement-matcher.service";
+import { StatementMatcherService, scopedRefField } from "./statement-matcher.service";
 import type { ConfirmBatchDto, ReviewDocumentDto } from "./statement.dto";
 
 /**
@@ -127,14 +127,23 @@ export class StatementsService {
       await this.storage.put(sourceKey, file.buffer, "application/pdf");
 
       const pages = await this.ocr.renderPages(file.buffer);
-      for (const image of pages) {
+      // Page images are still rendered and stored for every file, text layer or
+      // not: the review screen shows the reviewer the page, and "what the
+      // parser read" is only checkable against a picture of the paper.
+      const textLayer = await this.ocr.textPages(file.buffer).catch(() => []);
+
+      for (const [index, image] of pages.entries()) {
         pageNumber += 1;
         const storageKey = `statement/${batchId}/page-${pageNumber}.png`;
         await this.storage.put(storageKey, image, "image/png");
 
         try {
-          const ocr = await this.ocr.recognize(image);
+          const embedded = textLayer[index] ?? null;
+          const ocr = embedded ?? (await this.ocr.recognize(image));
           const parsed = parseStatement(ocr);
+          if (embedded) {
+            parsed.notes.unshift("texto leído del PDF original, sin OCR");
+          }
           const match = await this.matcher.match(parsed, serviceKind);
 
           const notes = [...parsed.notes, match.note].filter(Boolean);
@@ -295,8 +304,8 @@ export class StatementsService {
         where: { id: doc.batchId },
         select: { serviceKind: true },
       });
-      if (batch) {
-        const field = batch.serviceKind === "GAS" ? "meterNumber" : "accountNumber";
+      const field = batch && scopedRefField(batch.serviceKind);
+      if (batch && field) {
         const blank = await this.prisma.propertyService.findMany({
           where: {
             kind: batch.serviceKind,
@@ -434,7 +443,8 @@ export class StatementsService {
     docs: { matchedPropertyServiceId: string | null; extractedAccountRef: string | null }[],
     kind: ServiceKind,
   ) {
-    const field = kind === "GAS" ? "meterNumber" : "accountNumber";
+    const field = scopedRefField(kind);
+    if (!field) return;
     for (const d of docs) {
       if (!d.matchedPropertyServiceId || !d.extractedAccountRef) continue;
       await this.prisma.propertyService.updateMany({

apps/api/tsconfig.build.json

@@ -0,0 +1,4 @@
+{
+  "extends": "./tsconfig.json",
+  "exclude": ["node_modules", "dist", "**/*.spec.ts"]
+}

apps/web/src/components/StatementIntake.tsx

@@ -28,9 +28,15 @@ import type { ServiceKind, StatementBatch, StatementBatchStatus } from "@/lib/ty
  */
 
 /** The kinds the parsers actually recognise today. */
-const SUPPORTED: ServiceKind[] = ["ELECTRIC", "WATER", "TELEPHONE"];
+const SUPPORTED: ServiceKind[] = [
+  "ELECTRIC",
+  "WATER",
+  "TELEPHONE",
+  "GAS",
+  "PROPERTY_TAX",
+];
 /** Uploadable, but every page will land in review until a parser learns it. */
-const OTHER_KINDS: ServiceKind[] = ["GAS", "PROPERTY_TAX", "FEDERAL_ZONE", "CABLE"];
+const OTHER_KINDS: ServiceKind[] = ["FEDERAL_ZONE", "CABLE"];
 
 const STATUS_LABEL: Record<StatementBatchStatus, string> = {
   UPLOADED: "Recibido",

docs/RECEIPT_CAPTURE_SPEC.md

@@ -134,7 +134,8 @@ single-movement form.
 > **BUILT — 2026-08-01.** Implemented and verified end to end against real
 > scanned statements. `apps/api/src/statements/` holds the module: a swappable
 > `OcrProvider` seam with a self-hosted Tesseract implementation, per-provider
-> parsers for CFE / CESPT / Telnor, a scoped matcher, and a review queue that
+> parsers for CFE / CESPT / Telnor / gas / predial, a scoped matcher, and a
+> review queue that
 > posts through `BillingService.createBatch` with `source: "OCR"`. Web:
 > the "Captura automática (OCR)" tab of the Captura screen (upload + batch
 > list) and `/recibos/:id` (review queue with the page image beside the
@@ -207,6 +208,54 @@ single-movement form.
 > each bill (`9`, `405`, `406`); Tesseract read `405` as `205`. Handwriting is
 > a review hint at best and is deliberately not an input to matching.
 
+> **EXTENDED — gas and predial, 2026-08-01.** A second corpus (14 documents,
+> 29 pages: five municipal predial batches and ten gas invoices) added four
+> parsers — `GAS TIJUANA` plus one per municipality, because Tijuana, Rosarito
+> and Ensenada issue three completely different documents. End to end against
+> the dev database that is **21/29 auto-matched, 22/29 identified**, with the
+> provider read on 29/29 and an amount on 26/29.
+>
+> The eight review cases are all legitimate: five Tijuana pages whose municipal
+> account is not yet on file (see below), one clave not in the book, one page
+> too poorly scanned to read a clave at all, and one gas account shared by two
+> services. Excluding the structural Tijuana case, that is 21/24.
+>
+> **Five things this corpus proved:**
+>
+> 1. **Not every statement is a scan.** The gas company sends born-digital CFDI
+>    invoices whose text layer is exact. Rasterising and re-recognising those
+>    can only lose information — one sample turned `MEDIDOR: VM01014426` into
+>    `ar (LTR): 014420` — so `OcrProvider.textPages` reads the embedded layer
+>    first (`pdftotext -bbox-layout`, same poppler package as `pdftoppm`) and
+>    OCR stays the fallback for real scans. Page images are still rendered and
+>    stored either way, because the reviewer needs to see the paper.
+> 2. **The clave catastral is not two letters and six digits.** Positions four
+>    through eight are digits in all 932 stored claves, but the third is a
+>    letter in fifteen of them (`MMB01041`, `CGH52121`). Digitising the whole
+>    tail maps that `B` to an `8` and produces a key matching no property.
+> 3. **Tijuana predial prints no clave catastral at all.** Its only identifier
+>    is an 8-digit municipal account, carried in a 32-digit payment barcode
+>    (`account(8) + DDMMYY + amount(9) + folio(9)`) that the legacy database
+>    never held. It goes in `PROPERTY_TAX.meterNumber` — the same column gas
+>    uses, and for the same reason: `accountNumber` holds `DATMEX.predial`,
+>    which is not a per-property key and overwriting it would destroy the only
+>    link back to the original records. So Tijuana pages start cold and are
+>    taught by the first confirm, exactly like gas.
+> 4. **On Rosarito and Ensenada the clave is the primary key, not a fallback.**
+>    Those receipts print nothing else, so a unique clave hit there is a real
+>    match and auto-matches; on a utility bill that merely happens to print one
+>    it stays a review hint, as before.
+> 5. **A misread `$` is the dangerous failure, not a missing one.** An Ensenada
+>    receipt for `$2,203.00` OCR'd as `82,203.00` — the dollar sign read as an
+>    8, which would post a charge 37× too large and look entirely ordinary in
+>    the ledger. Every predial amount therefore requires a literal `$`, and a
+>    page that cannot produce one reports no amount and goes to review. Two of
+>    the 29 pages take that path, which is the correct outcome for both.
+>
+> Regression cover for all of the above lives in
+> `statement-parser.spec.ts` and `tesseract.provider.spec.ts`; every fixture in
+> them is a verbatim OCR excerpt from a real receipt.
+
 ### Motivation (from the meeting)
 
 Each utility company (CFE, water, phone, gas...) sends 300+ individual
@@ -330,8 +379,8 @@ Per the meeting notes' own field list:
 | Agua — Número de cuenta | `WATER` | `accountNumber` | `AGUA` | ✅ populated today |
 | Zona Fed — Número de Zona Federal | `FEDERAL_ZONE` | `accountNumber` | `ZFED` | ✅ populated today |
 | Tel — Número de teléfono | `TELEPHONE` *(new)* | `accountNumber` | `Property.phone1/2/3` (currently on `Property`, not `PropertyService`) | ⚠️ schema gap — see below |
-| Impuesto — Clave Catastral | `PROPERTY_TAX` | `accountNumber` | migrated from `PREDIAL`, **not** `CLAVE` | ⚠️ needs verification — see below |
-| Gas — Número de medidor | `GAS` | `meterNumber` | not populated — folded into free-text `notes` today | ⚠️ data gap — see below |
+| Impuesto — Clave Catastral | `PROPERTY_TAX` | `Property.cadastralKey`, plus `meterNumber` for Tijuana's municipal account | `CLAVE`; `PREDIAL` is left on `accountNumber` and never matched against | ✅ built — see the 2026-08-01 extension note |
+| Gas — Número de medidor | `GAS` | `meterNumber` | not populated — folded into free-text `notes` today | ✅ 160/334 recovered from `notes` |
 
 Confidence rule of thumb once a field is confirmed populated, tune after
 seeing real statements: