"""Fetch, parse and build Sejm committee full-transcript speaker turns.

Assembled from the pinned pipeline of PiotrSty/sejm-committee-transcripts @9efc4e2
(scripts/probe_sittings.py, bulk_download.py, parse_zapis.py, extract_all.py,
build_dataset.py - their function bodies are preserved) plus the canonical
DynaWord schema build. Normalization, PII redaction and the speaker allowlist live
HERE so the shard is reproducible from this script alone.

Turns: a turn starts at every label line (`split_at_labels`: a line ending with ":" whose text is a
speaker label, whoever the speaker is, also a label wrapped over two lines), after the PDF page-break
blocks (page number + stenographer initials, the title "Pełny Zapis Przebiegu Posiedzenia:", the
committee line "Komisji ... (nr N)") were cut out and a word hyphenated across one was rejoined
(`strip_page_blocks`). The pinned upstream rule (a label had to start with one of a fixed list of role
words and be indented at most 6 spaces) left every other speaker's words inside the previous turn; the
indent check is gone because the stored text has no indentation to check.

Speaker allowlist: only turns whose speaker label fully matches `SPEAKER_RULES` (MPs,
members of the government, heads of constitutional organs, Sejm/Senate staff) or is one of
the typo labels in `EXACT_LABELS` are kept; guests, experts, union/NGO/company representatives, "Głos z sali" and
every unrecognised label are dropped. The shard on the Hub was filtered with
src/clean_sejm_committee_transcripts.py (the PDF cache is not kept): it applies the same page-block
stripper and label detector to the stored turn text, so it cuts the same lines a fresh parse would.
A turn it cuts into pieces keeps its id for the first piece and gets `<id>_<k>` for the next ones, so the
ids differ from a fresh `build()`, which numbers the cut turns consecutively (`turn_idx` and the
content hash differ too); the text and the authors are the same.

Source: Kancelaria Sejmu RP, https://api.sejm.gov.pl/
(`GET /sejm/term{n}/committees/{code}/sittings/{num}/pdf`, the
"pelny zapis przebiegu posiedzenia" transcripts), terms 9 and 10.

Requirements: Python 3.10+, `pdftotext` (poppler-utils) on PATH, `tiktoken`,
`pyarrow`. Working cache: ./sejm_cache (API cache, PDFs, parsed turns).

Usage:
  python3 src/fetch_sejm_committee_transcripts.py probe 9 10
  python3 src/fetch_sejm_committee_transcripts.py download 9 10
  python3 src/fetch_sejm_committee_transcripts.py extract 9 10
  python3 src/fetch_sejm_committee_transcripts.py build
  python3 src/fetch_sejm_committee_transcripts.py all 9 10
"""
import concurrent.futures as cf
import hashlib
import json
import pathlib
import re
import subprocess
import sys
import unicodedata
import urllib.error
import urllib.request

BASE = "https://api.sejm.gov.pl/sejm"
CACHE = pathlib.Path("sejm_cache")
SOURCE = "sejm_committee_transcripts"
ADDED = "2026-09-18"
LICENSE = "public-domain (official documents)"
FIELDS = ["id", "text", "source", "added", "created", "token_count", "license", "author"]
# The attribution sidecar line of a row: these keys of the parsed turn, plus the row id.
ATTRIBUTION_KEYS = ("term", "committee_code", "committee_name", "sitting_num", "date", "turn_idx", "speaker",
                    "content_sha1", "source_url")
MIN_TURN_CHARS = 15

# ---------------------------------------------------------------- parse_zapis
HEADER_PAT = re.compile(
    r"^\s*(X{0,2}I?X kadencja|KANCELARIA SEJMU|Biuro Komisji Sejmowych|"
    r"PEŁNY ZAPIS PRZEBIEGU POSIEDZENIA|Pełny zapis przebiegu posiedzenia|¢.*)\s*$"
)
PAGEFOOT_PAT = re.compile(r"^\s*[a-z]{1,3}\.?\s+\d{1,4}\s*$")
PAGENUM_PAT = re.compile(r"^\s*\d{1,4}\s*$")

def dehyphenate(text: str) -> str:
    # soft hyphenation join: "Kon-\nrada" -> "Konrada"
    return re.sub(r"([a-ząćęłńóśźż])-\s*\n\s*([a-ząćęłńóśźż])", r"\1\2", text)


def pdf_text(path: str) -> str:
    r = subprocess.run(
        ["pdftotext", "-layout", "-enc", "UTF-8", path, "-"],
        capture_output=True, text=True, encoding="utf-8", errors="replace", check=True)
    return r.stdout


def parse_pdf(path: str):
    """Return (transcript_type, header_text, turns) where turns = [(speaker, text)].

    Turns start at every label line (`split_at_labels`), whoever the speaker is; the allowlist is
    applied later. Page-break blocks are cut out first (`strip_page_blocks`)."""
    raw = pdf_text(path)
    if "PEŁNY ZAPIS" not in raw and "pełny zapis" not in raw.lower()[:2000]:
        return "other", None, []
    lines = [s for s in (ln.strip() for ln in raw.splitlines())
             if s and not (HEADER_PAT.match(s) or PAGEFOOT_PAT.match(s) or PAGENUM_PAT.match(s))]
    pieces = split_at_labels(strip_page_blocks(lines)[0])
    if len(pieces) == 1:
        return "nospeaker", None, []
    turns = []
    for label, body in pieces[1:]:
        text = turn_text(body)
        if len(text) >= MIN_TURN_CHARS:
            turns.append((label, text))
    return "pelny_zapis", " ".join(pieces[0][1]), turns


def doc_id(term, code, num, text):
    return hashlib.sha1(f"{term}/{code}/{num}/{text}".encode()).hexdigest()[:16]


def row_id(r):
    return f"{SOURCE}_{r['term']}_{r['committee_code']}_{r['sitting_num']}_{r['turn_idx']}"


def dedup_turns(rows):
    """Sitting-level joint-sitting dedup (term + content sha1) and adjacent exact-turn dedup.

    Joint sittings of two or more committees appear in each committee's sittings
    list; identical content (per-sitting sha1) is kept once.
    """
    sittings = {}
    for r in rows:
        sittings.setdefault((r["term"], r["committee_code"], r["sitting_num"]), []).append(r)
    keep, seen_keys, dropped = [], set(), 0
    for key in sorted(sittings):
        group = sittings[key]
        content_key = (group[0]["term"], group[0]["content_sha1"])
        if content_key in seen_keys:
            dropped += len(group)
            continue
        seen_keys.add(content_key)
        keep.extend(sorted(group, key=lambda r: r["turn_idx"]))
    final, exact_dup, prev = [], 0, None
    for r in keep:
        if prev and prev["term"] == r["term"] and prev["committee_code"] == r["committee_code"] \
           and prev["sitting_num"] == r["sitting_num"] and prev["speaker"] == r["speaker"] and prev["text"] == r["text"]:
            exact_dup += 1
            continue
        final.append(r)
        prev = r
    return final, dropped, exact_dup


# ------------------------------------------------------------------ speaker allowlist
# Legal basis is the official-documents exclusion (Polish copyright act art. 4 pkt 2). It
# covers statements made in office by MPs, senators, members of the government, heads of
# constitutional organs and Sejm/Senate staff. Guests, experts, union/NGO/company
# representatives and the anonymous "Głos z sali" are not covered, so their turns are
# dropped. The allowlist is fail-closed: a turn is kept only if its raw `speaker` label
# matches one rule below IN FULL (name tail included) or is one of the typo labels in
# EXACT_LABELS; every other label is dropped, including any label this code has never seen.
# Rule ids are persisted in the stats and in data/<SOURCE>/<SOURCE>.speaker-roles.csv, so keep
# them stable.
_UP = "A-ZĄĆĘŁŃÓŚŹŻ"
_LO = "a-ząćęłńóśźżéüöäèç"
_TOK = rf"[{_UP}][{_LO}'’.]+(?:(?: ?[-–]){{1,2}} ?[{_UP}][{_LO}'’]+)*"  # Kowalski, Kowalska-Nowak, Kowalska – Nowak, O'Neill, "Kowalska- -Nowak"
_NAME = rf"{_TOK}(?: (?:(?:[Vv]el|de|von|van) )?{_TOK}){{1,2}}"  # 2-3 tokens, optional particle
_TAIL = r"(?: (?:prof\.|dr|hab\.|inż\.|mgr))*(?: " + _NAME + ")?"  # titles + optional name
# Party tag after a name: "(PiS)", glued "Kowalski(PiS)", "Kowalski, (KP)", and the typos "((PSL-TD)", "(PSL-TD".
_PARTY = r"[ ,.]{0,3}(?:\(\(?[^()\n]{1,60}\)|\([^()\s]{1,30})"
# "Poseł Jan Kowalski (PiS)", surname-only "Poseł Kowalski (PiS)"; without a party only when the label
# says the MP is outside the committee ("Poseł Jan Kowalski – spoza składu Komisji", party may follow).
# A party tag may be followed by a note on whom the MP speaks for. The label must name the MP: a bare
# "Poseł" or "Poseł (PiS)" never matches.
_SPOZA = r" ?[–−-] ?(?:poseł )?spoza sk[łl]ad(?:u|ów) (?:[Kk]omisji|podkomisji)"
_NOTE = r"(?:" + _SPOZA + r"|(?: ?[–−-] ?przedstawiciel Komisji| reprezentując[ayą]) [^()\n]{1,80})"
_MP = (rf"(?:[Pp]oseł|[Pp]osłanka)(?: wnioskodawc[aęy])? "
       rf"(?:{_NAME}(?:{_PARTY}(?:{_NOTE})?|{_SPOZA}(?:{_PARTY})?)|{_TOK}{_PARTY}(?:{_NOTE})?)")
# "Podkomisji", with the topic some subcommittees carry: "Podkomisji d.s. Ponownego Zbadania Wypadku Lotniczego".
_SUBCOMMITTEE = rf"[Pp]odkomisji(?: (?:d\.s\.|ds\.|do [Ss]praw)(?: [{_UP}{_LO}-]+){{1,10}})?"
_CHAIR_DEPUTY = r"(?:(?:[Pp]ierwsz[ya]|[Dd]rug[ia]) )?[Zz]astęp(?:ca|czyni) przewodnicząc(?:ego|ej)"
_SEJM_BUREAU = (r"(?:BAS|Bas|BEOS|Beos|Biur\w+ Analiz Sejmowych"
                r"|Biur\w+ Ekspertyz(?: (?i:i))? Ocen(?:y)? Skutków Regulacji)(?: (?:w )?Kancelarii Sejmu(?: RP)?)?")
# Other units of the Kancelaria Sejmu whose directors are Sejm staff; "KS" is the label's own short form of
# "Kancelarii Sejmu" ("Dyrektor BOM KS", "Dyrektor biura KS"), BKSP the Biuro Komunikacji Społecznej.
_SEJM_OFFICE = (rf"(?:{_SEJM_BUREAU}|Biur\w+ Legislacy\w+|Biur\w+ Komisji Sejmowych|Biur\w+ Obsługi Posłów|Bibliotek\w+ Sejmow\w+|BKSP"
                r"|[\w -]+ Kancelarii (?:Sejmu|Senatu)|(?:[Bb]iura(?: [\w-]+)?|B[A-ZŁ]{1,3}) KS)")
_BL = r"(?:BL|Biur\w+ Legislacy\w+)(?: (?:w )?Kancelarii Sejmu)?"  # Biuro Legislacyjne ("Legislacyjego" typo too)
_MINISTRY_WORDS = "|".join(r"ds\." if w == "ds." else w for w in (
    "rolnictwa rozwoju przedsiębiorczości wsi klimatu środowiska zdrowia sportu turystyki edukacji narodowej narodowego nauki "
    "szkolnictwa wyższego kultury dziedzictwa spraw wewnętrznych administracji sprawiedliwości "
    "zagranicznych cyfryzacji technologii polityki senioralnej gospodarki morskiej żeglugi "
    "śródlądowej przemysłu funduszy regionalnej rodziny pracy społecznej finansów infrastruktury "
    "obrony energii aktywów państwowych równości Unii Europejskiej europejskich UE ds. do i w z "
    "KPRM Kancelarii Prezesa Rady Ministrów RM członek szef koordynator służb specjalnych "
    "prokurator generalny przewodniczący Komitetu Stałego").split())
_MINISTRY_ABBREVIATION = r"\bM[A-ZŚŻŁ][A-Za-zŚŻŁśżł]{0,6}\b"
_STATE_SECRETARY_WORDS = _MINISTRY_WORDS + "|" + "|".join(
    "we Ministerstwie Ministerstwa Ministerstwo zastępca szefa pełnomocnik rządu główny generalny generalna "
    "konserwator geolog kraju przyrody inspektor informacji finansowej zabytków leśnictwa łowiectwa osób "
    "niepełnosprawnych wsi CPK KAS dla RP spraw".split())
# What a state secretary may hold besides the post ("pełnomocnik rządu do spraw równego traktowania",
# "szef Krajowej Administracji Skarbowej"): an office noun, then letters-only words (no digits, so
# "w latach 2015–2018" never passes), then the name. The same offices may stand BEFORE the rank
# ("Pełnomocnik rządu ds. X, sekretarz stanu w MP NAME", "Zastępca szefa KPRM podsekretarz stanu NAME");
# there only the government offices, not "przewodniczący"/"sekretarz", open the label.
_OFFICE_WORD = r"[^\W\d_]+(?:-[^\W\d_]+)*[.,]?"
_OFFICE_NOUN = r"pełnomocni(?:k|czka)|szef(?:owa)?|zastępc[ay]|zastępczyni|wiceprzewodnicząc[ya]|główn[yae]"
_STATE_OFFICE = (rf"[ ,–-]+(?:(?:i|oraz) )?(?i:{_OFFICE_NOUN}|przewodnicząc[ya]|sekretarz)(?: {_OFFICE_WORD}){{0,14}}")
_STATE_PREFIX = rf"(?i:{_OFFICE_NOUN})(?: {_OFFICE_WORD}){{0,14}}[ ,–-]+"
_STATE_RANK = r"(?:[Pp]od)?[Ss]ekretarza? [Ss]tanu"
_STATE_BODY = rf"(?:[ ,–-]+(?:(?i:{_STATE_SECRETARY_WORDS})|{_MINISTRY_ABBREVIATION}))*"  # "w MRiPS", "w Ministerstwie Zdrowia"
# A state secretary's label names a government body, never the President's office ("Kancelaria Prezydenta",
# KPRP, BPM stay out: 1A) and never a former post ("były podsekretarz stanu", "b. sekretarz stanu").
_GOVERNMENT_BODY = (rf"(?:{_MINISTRY_ABBREVIATION}|(?i:ministerst)|KPRM|Kancelarii Prezesa Rady Ministrów"
                    r"|Komitetu (?:do [Ss]praw|ds\.) Pożytku Publicznego)")
_NOT_STATE_SECRETARY = r"(?:Prezydent|KPRP|KP RP|BPM|(?i:\bbył|ówczesn|dawn)|\bb\.)"
_CONSTITUTIONAL_HEAD = "|".join([
    r"Prezes (?:NIK|Najwyższej Izby Kontroli)",
    r"Prezes (?:NBP|Narodowego Banku Polskiego)",
    r"Prezes (?:TK|Trybunału Konstytucyjnego)",
    r"Prezes (?:NSA|Naczelnego Sądu Administracyjnego)",
    r"Pierwszy Prezes (?:SN|Sądu Najwyższego)",
    r"Rzecznik [Pp]raw [Oo]bywatelskich",
    r"Rzecznik [Pp]raw [Dd]ziecka",
    r"Przewodnicząc(?:y|a) (?:KRRiT|Krajowej Rady Radiofonii i Telewizji)",
    r"Przewodnicząc(?:y|a) (?:KRS|Krajowej Rady Sądownictwa)",
    r"Prokurator Generalny",
])

# Standing committees of the Sejm (terms 9 and 10, as in the `committee_name` column) after "Komisji", i.e. in
# the genitive: "Komisja Regulaminowa, ..." is "Komisji Regulaminowej, ...". Extraordinary and investigative
# committees are not listed: no secretary of one is labelled in the data.
_SEJM_COMMITTEES = "|".join(re.escape(name) for name in (
    "Administracji i Spraw Wewnętrznych", "Cyfryzacji, Innowacyjności i Nowoczesnych Technologii",
    "do Spraw Deregulacji", "do Spraw Dzieci i Młodzieży", "do Spraw Energii, Klimatu i Aktywów Państwowych",
    "do Spraw Kontroli Państwowej", "do Spraw Petycji", "do Spraw Unii Europejskiej",
    "Edukacji i Nauki", "Edukacji, Nauki i Młodzieży", "Etyki Poselskiej", "Finansów Publicznych",
    "Gospodarki i Rozwoju", "Gospodarki Morskiej i Żeglugi Śródlądowej", "Infrastruktury",
    "Kultury Fizycznej, Sportu i Turystyki", "Kultury i Środków Przekazu",
    "Kultury, Dziedzictwa Narodowego i Środków Przekazu", "Łączności z Polakami za Granicą",
    "Mniejszości Narodowych i Etnicznych", "Obrony Narodowej", "Ochrony Środowiska, Zasobów Naturalnych i Leśnictwa",
    "Odpowiedzialności Konstytucyjnej", "Polityki Senioralnej", "Polityki Społecznej i Rodziny",
    "Regulaminowej, Spraw Poselskich i Immunitetowych", "Rolnictwa i Rozwoju Wsi",
    "Samorządu Terytorialnego i Polityki Regionalnej", "Spraw Zagranicznych", "Sprawiedliwości i Praw Człowieka",
    "Ustawodawczej", "Zdrowia"))

# (rule id, pattern matched with fullmatch). First match wins.
SPEAKER_RULES = [
    ("mp", re.compile(_MP)),
    # "Przewodniczący poseł NAME (PARTY)" (the party may be missing), the older order
    # "Poseł przewodniczący NAME (PARTY)", and "Przewodnicząca NAME (PARTY)", where the party tag stands
    # in for the missing "poseł". A "Przewodniczący NAME" without a party tag never matches.
    # A subcommittee's chair or deputy chair ("Przewodniczący Podkomisji d.s. X poseł NAME (PARTY)",
    # "Pierwszy zastępca przewodniczącego Podkomisji poseł NAME") only with "poseł"/"posłanka" ahead of the name: a
    # subcommittee can be a ministry's, with members who are no MPs.
    # ponytail: any 2-3 capitalised words before the party tag count as the name; tighten if an
    # "Przewodniczący Rady Miasta (PO)"-type label ever shows up (the 2026-10 data has none).
    ("mp_committee_chair", re.compile(
        rf"(?:Wice)?[Pp]rzewodnicząc[ya](?: {_SUBCOMMITTEE})? (?:{_MP}|(?:poseł|posłanka) {_NAME})"
        rf"|{_CHAIR_DEPUTY} {_SUBCOMMITTEE} (?:{_MP}|(?:poseł|posłanka) {_NAME})"
        rf"|(?:[Pp]oseł|[Pp]osłanka) (?:wice)?przewodnicząc[yą] {_NAME}{_PARTY}"
        rf"|Przewodnicząc[ya] {_NAME}{_PARTY}")),
    ("senator", re.compile(rf"(?:Senator|Senatorka)(?: RP)? {_NAME}(?:{_PARTY})?")),
    ("sejm_senate_marshal", re.compile(
        rf"(?:Wicemarszałkini|(?:Wice)?[Mm]arszałek) (?:Sejmu|Senatu)(?: (?:RP|Rzeczypospolitej Polskiej))?(?:,? poseł)?{_TAIL}(?:{_PARTY})?")),
    # "Ministra" is the feminine title; "Szef KPRM" is a minister-member of the Council of Ministers;
    # "Członek Rady Ministrów" is a member by definition. "Minister pełnomocny" (an ambassador) never matches.
    ("government_member", re.compile(
        rf"(?:Wice)?[Pp]rezes (?:Rady Ministrów|RM)(?:, minister(?:[ ,]+[{_LO}]+)+)?{_TAIL}"
        rf"|Minist(?:er|ra)(?:[ ,–-]+(?i:{_MINISTRY_WORDS}))*{_TAIL}"
        rf"|Szef (?:KPRM|Kancelarii Prezesa Rady Ministrów){_TAIL}"
        rf"|Członek Rady Ministrów(?:[ ,]+(?:minister )?(?:ds\.|do spraw)(?: [{_LO}]+){{1,3}})?{_TAIL}")),
    # Secretaries/undersecretaries of state in a ministry or the PM's chancellery, the rank in any
    # position: first ("Sekretarz stanu w MZ NAME"), after the government offices they hold ("Pełnomocnik
    # rządu do spraw X, sekretarz stanu w MRiPS NAME", "Zastępca szefa KPRM podsekretarz stanu NAME") or
    # after the name ("Anna Radwan-Röhrenschef podsekretarz stanu w Ministerstwie Spraw Zagranicznych").
    # Between the rank and the name only ministry words, ministry abbreviations (MF, MSWiA) and the
    # government offices they hold ("główny konserwator zabytków") are allowed; a surname alone is
    # enough after the body ("w MSiT Gut-Mostowy"). The label must name a government body and no
    # presidential-office marker (KPRP etc.). Prose that merely contains the rank ("Witam panią X,
    # sekretarz stanu w ...") starts with neither an office noun nor a name, so it never matches.
    ("state_secretary", re.compile(
        rf"(?!.*{_NOT_STATE_SECRETARY})(?=.*{_GOVERNMENT_BODY})"
        rf"(?:(?:{_STATE_PREFIX})?{_STATE_RANK}{_STATE_BODY}(?:{_STATE_OFFICE} {_NAME}|{_TAIL}| {_TOK})"
        rf"|{_NAME} {_STATE_RANK}{_STATE_BODY})")),
    ("constitutional_organ_head", re.compile(rf"(?:{_CONSTITUTIONAL_HEAD}){_TAIL}")),
    # Plain "Legislator NAME" is the transcripts' own form for the Biuro Legislacyjne of the
    # Kancelaria Sejmu (the same names carry an explicit BL affiliation elsewhere). Legislators
    # of clubs, ministries and other bodies always carry their affiliation, so they never match.
    # Also "Legislator sejmowy", "Legislator z Kancelarii Sejmu" and the name-first order
    # "Legislator NAME z Biura Legislacyjnego".
    ("sejm_legislator", re.compile(
        rf"Legislator(?:ka)? (?:(?:[zZw] )?{_BL}{_TAIL}|(?:sejmowy|[zZ] Kancelarii Sejmu){_TAIL}|{_NAME}(?: [zZw] {_BL})?)")),
    # BAS/BEOS staff: experts and specialists (optionally "ds. <topic>"), heads of a BAS division
    # ("Naczelnik wydziału w BAS") and the committee-secretariat staff of BAS. An "Ekspert zewnętrzny"
    # (commissioned from outside) is not staff and never matches.
    ("sejm_bureau_expert", re.compile(
        rf"(?:Ekspert(?:ka)?|(?:Główny )?[Ss]pecjalist(?:a|ka))(?: (?:[zw] )?(?i:ds\.|do spraw)(?: [{_UP}{_LO}-]+){{1,6}})?(?: [zw])? "
        + _SEJM_BUREAU + _TAIL
        + rf"|Naczelnik [Ww]ydziału(?: (?:[{_UP}][{_LO}]+(?:-[{_UP}][{_LO}]+)?|[iwz])){{0,7}} {_SEJM_BUREAU}{_TAIL}"
        + rf"|Pracownic[ay] sekretariatu Komisji w {_SEJM_BUREAU}{_TAIL}")),
    # Heads of Kancelaria Sejmu/Senatu units: the Chancellery, BAS/BEOS, Biuro Legislacyjne, Biuro
    # Komisji Sejmowych, the Sejm Library, the Marshal's cabinet and the Marshal's Guard (whose "Ekspert"
    # is Sejm staff too, so it sits in this rule: rule ids stay stable).
    # The deputy chief ("Zastępca szefa Kancelarii Sejmu") and the chief in the feminine are included.
    ("sejm_senate_office_head", re.compile(
        r"(?:(?:Zastępca [Ss]zefa|Szef(?:owa)?) (?:Kancelarii (?:Sejmu|Senatu)(?: RP| Rzeczypospolitej Polskiej)?|KS)"
        rf"|(?:(?:Wice)?[Dd]yrektor|P\.o\. dyrektora) {_SEJM_OFFICE}"
        r"|Dyrektor generalny kierujący [Gg]abinetem [Mm]arszałka Sejmu(?: RP)?"
        rf"|(?:Komendant|Ekspert) Straży Marszałkowskiej){_TAIL}")),
    # Secretaries of Sejm committees are Sejm staff (Biuro Komisji Sejmowych): "Sekretarz Komisji FIRST
    # LAST", the same with the name of a Sejm committee ahead of the name ("Sekretarz Komisji Zdrowia
    # NAME"), "Sekretarz Komisji z Biura Spraw Międzynarodowych NAME" and "Starszy sekretarz". The name
    # is always two tokens: a secretary of a works council or of a joint commission carries more words
    # ("Komisji Wspólnej Rządu i Samorządu Terytorialnego"), and the adjective forms below ("Komisji
    # Zakładowej NSZZ ...") are excluded explicitly. A committee name the list does not know is dropped.
    ("sejm_committee_secretary", re.compile(
        rf"(?:Starszy sekretarz|Sekretarz) Komisji (?:(?!(?:Zakładowej|Międzyzakładowej|Wspólnej|Krajowej|Regionalnej|Rewizyjnej|Okręgowej) ){_TOK} {_TOK}"
        rf"|(?:{_SEJM_COMMITTEES}|z Biura (?:Spraw Międzynarodowych|Komisji Sejmowych)) {_TOK} {_TOK})")),
]

# Labels that are official speakers beyond doubt but that no rule above can take without also taking
# look-alikes. Each is a transcript typo or a bare name-plus-party form, matched in full and in NFC, mapped to
# the rule it belongs to:
#  - a misspelt MP name ("Szynkowski vel sęk", "TchórzePwski", glued "TomaszLatos"), the party tag is there;
#  - a stray "z" after "Legislator" (a rule for it would also take "Legislator z Ministerstwa Zdrowia");
#  - a club tag "(KO)" on a Biuro Legislacyjne legislator (her label "Legislator Katarzyna Abramowicz
#    z Biura Legislacyjnego" shows the affiliation; a rule for "Legislator NAME (PARTY)" would also take
#    club legislators).
# Keep this short: a new label belongs here only after it is checked against the same person's other labels.
EXACT_LABELS = {
    "Poseł Szymon Szynkowski vel sęk (PiS)": "mp",
    "Przewodniczący poseł Krzysztof TchórzePwski (PiS)": "mp_committee_chair",
    "Przewodniczący poseł TomaszLatos (PiS)": "mp_committee_chair",
    "Legislator z Jarosław Lichocki": "sejm_legislator",
    "Legislator z Konrad Nietrzebka": "sejm_legislator",
    "Legislator Katarzyna Abramowicz (KO)": "sejm_legislator",
    # MPs labelled by name and party tag only (no "Poseł"), and chair labels with a typo in "Przewodniczący"
    "Kamila Gasiuk-Pihowicz (KO)": "mp",
    "Ryszard Terlecki (PiS)": "mp",
    "Agnieszka Maria Kłopotek (PSL=TD)": "mp",
    "zrzewodniczący poseł Tomasz Ławniczak (PiS)": "mp_committee_chair",
    "Pewodniczący poseł Piotr Babinetz (PiS)": "mp_committee_chair",
    # Antoni Macierewicz (an MP) as chair of the MON subcommittee on the Smolensk crash, labelled without "poseł"
    # (the rule needs it: the subcommittee is a ministry's, its deputy chair Kazimierz Nowaczyk is no MP)
    "Przewodniczący podkomisji Antoni Macierewicz": "mp_committee_chair",
    "Przewodniczący Podkomisji ds. ponownego zbadania wypadku lotniczego Antoni Macierewicz": "mp_committee_chair",
    "PodPodsekretarz stanu w MKiDN Marek Krawczyk": "state_secretary",  # typo in "Podsekretarz"
}


def classify_speaker(label):
    """Rule id of the first allowlist rule that fully matches `label`, else None (dropped).

    The label is matched in NFC: two shipped labels carry a decomposed "ó" (o + U+0301).
    """
    label = unicodedata.normalize("NFC", label)
    if label in EXACT_LABELS:
        return EXACT_LABELS[label]
    for rule_id, pattern in SPEAKER_RULES:
        if pattern.fullmatch(label):
            return rule_id
    return None


# ------------------------------------------------------------------ label lines and page blocks
# ONE label detector and ONE page-block stripper, used by parse_pdf() (a fresh PDF) and by
# clean_sejm_committee_transcripts.py (stored turn text), so both cut turns at the same lines.
#
# Label line: a line that ends with ":" and whose text before it is a speaker label, that is
# (optional role/title words) + a personal name (+ optional party/note in brackets, an organisation
# in quotes, a title suffix such as "prof. ucz."), or one of the unnamed forms "Głos z sali",
# "Świadek nr 3", "Tłumacz". A label is also whatever classify_speaker() accepts. Anything else ending
# with ":" is prose and stays in the text: "Proponuję brzmienie:", "Pełny Zapis Przebiegu
# Posiedzenia:", "Ja zacytuję pana ministra Jana Kowalskiego:".
# The detector is deliberately generous (a wrongly cut sentence only splits one turn and the
# piece is dropped, while a missed label leaves a guest's words inside an official's turn).
# Known misses (measured on a seeded sample, see the commit message): a label that follows prose on the
# same line ("... odwołuje Poseł Paweł Jabłoński (PiS):") and a label wrapped over three lines stay in
# the previous text. Known false positives: prose that ends in capitalised words before a colon.
LABEL_MIN, LABEL_MAX = 3, 300  # the longest labels in the data (a candidate for an ambassador) are about 260
MAX_LABEL_TOKENS = 40
_ABBREV = {
    "prof", "dr", "hab", "inż", "mgr", "ds", "im", "ul", "rez", "nadinsp", "insp", "bryg", "gen", "płk", "ppłk",
    "mjr", "kpt", "por", "st", "mł", "podinsp", "nadkom", "kom", "asp", "sierż", "doc", "lek", "med", "ks", "sp",
    "z", "o", "oo", "nr", "p", "r", "tzw", "pk", "kg", "adm", "cdr", "ppor", "ltn", "sztab", "dyw", "pil", "dypl",
    "wz", "zw", "red", "arch", "jr", "sr", "n", "m", "al", "pl", "os", "woj", "pow", "gm", "min", "wicemin",
    "pełn", "zast", "kier", "dyr", "ob", "prez", "mec", "adw",
}
_NAME_PARTICLES = {"vel", "de", "von", "van", "di", "da", "del", "della", "du", "le", "la", "ter", "ten", "der",
                   "den", "al", "el", "bin", "ibn", "ben", "dos", "das", "do", "y", "ap", "i"}  # "Jordi Salvador i Duch"
# a lone surname is a name only right after one of these ("Poseł Kowalski", "pan Kowalski")
_HONORIFICS = {
    "pan", "pani", "panie", "panu", "poseł", "posłanka", "posła", "minister", "ministrze", "ks", "ksiądz", "dr",
    "prof", "hab", "gen", "płk", "ppłk", "mjr", "kpt", "por", "insp", "nadinsp", "adm", "bryg", "sierż", "mł",
    "rez", "mgr", "inż", "senator", "marszałek", "prezes", "burmistrz", "wójt", "starosta", "ambasador", "radca",
    "mecenas", "sędzia", "profesor", "doktor",
}
_PROSE_WORDS = {"ja", "Ja", "my", "My", "że", "się", "nie", "jest", "są", "to"}  # never inside a label
_UNNAMED_LABEL = re.compile(
    r"[Gg][łl]os(?:y)? (?:z|za|poza|ze|spoza|zza|w) \S+(?: \S+){0,3}"
    r"|Świadek(?: nr)? \d+|Statysta [A-Z.]+|Tłumacz(?:ka)?|Protokolant(?:ka)?")
_BRACKETS = re.compile(r"\s*\([^()]{0,60}\)")
_QUOTED = re.compile(r"\s*„[^”]{0,100}”")  # an organisation named in a label: Inicjatorka akcji „Hejt nie jest OK” Ewa Abart
_TITLE_SUFFIX = re.compile(r"\s+prof\.(?:\s+[^\W\d_]{1,6}\.?)?$")  # "dr hab. Jan Kowalski prof. ucz."
_INITIALS = re.compile(r"(?:[^\W\d_]\.){2,3}")  # "M.B."
_TERMINAL = ".?!:;…"


def _name_part(part):
    """One hyphen-free part of a name: Kowalski, O'Neill, Coşkun, "P." (an initial), "M.B."."""
    part = part.strip("„”\"'")
    if _INITIALS.fullmatch(part):
        return True
    letters = [c for c in part if c.isalpha()]
    if not letters or not letters[0].isupper():
        return False
    if len(letters) == 1:
        return part.rstrip(".") == letters[0]
    return any(c.islower() for c in letters) and not any(c.isdigit() for c in part)


def _name_token(token):
    parts = [p for p in re.split(r"[-–]", token) if p] or [""]
    return _name_part(parts[0]) and all(_name_part(p) or p.islower() for p in parts[1:])  # "Sowiń-ski"


def _name_tail(tokens):
    """(name weight, index of its first token) of the personal name closing `tokens`; "M.B." weighs 2."""
    i, weight = len(tokens), 0
    while i > 0 and weight < 3:
        token = tokens[i - 1]
        if _name_token(token) and not (token.rstrip(".").lower() in _ABBREV and token.endswith(".") and len(token) > 2):
            i -= 1
            weight += 2 if _INITIALS.fullmatch(token) else 1
        elif token.lower() in _NAME_PARTICLES and weight and i > 1 and _name_token(tokens[i - 2]):
            i -= 1
        else:
            break
    return weight, i


def _structural_label(body):
    """Role/title words + a personal name (+ bracketed party or note); `body` is the line without its colon."""
    if _UNNAMED_LABEL.fullmatch(body):
        return True
    if re.search(r"[?;]|https?://", body):
        return False
    core = _QUOTED.sub(" ", body)
    while "(" in core and _BRACKETS.search(core):
        core = _BRACKETS.sub("", core, count=1)
    core = _TITLE_SUFFIX.sub("", core.strip(" ,"))
    if "(" in core or ")" in core or re.search(r"\bdruk\b", core):
        return False
    tokens = core.split()
    if not tokens or len(tokens) > MAX_LABEL_TOKENS or any(t in _PROSE_WORDS for t in tokens):
        return False
    head = core.split(",")[0].split()  # "Pan Imię Nazwisko, rola ..."
    if head[0] in ("Pan", "Pani") and len(head) >= 3 and "," in core and all(_name_token(t) for t in head[1:]):
        return True
    weight, start = _name_tail(tokens)
    if weight >= 2:
        return True
    return weight == 1 and start > 0 and tokens[start - 1].rstrip(".").lower() in _HONORIFICS


def is_label(body):
    """True if `body` (a line without its closing colon) is a speaker label."""
    body = unicodedata.normalize("NFC", body.strip())
    if _TITLE.search(body):  # the page-block title is capitalised words like a name: never a label
        return False
    return LABEL_MIN <= len(body) <= LABEL_MAX and (classify_speaker(body) is not None or _structural_label(body))


def split_at_labels(lines):
    """[(label or None, [lines])]; the first piece (label None) is whatever precedes the first label.

    A label wrapped over two lines is one label: the line before the colon line has no closing
    punctuation and the two joined are a label too (unless the colon line alone is an allowlisted label).
    """
    pieces = [(None, [])]
    for line in lines:
        line = line.strip()
        if not line:
            continue
        label = None
        if line.endswith(":"):
            body = line[:-1].rstrip()
            previous = pieces[-1][1][-1] if pieces[-1][1] else None
            joined = None
            if previous is not None and previous[-1] not in _TERMINAL:
                # a double-barrelled name broken at its hyphen is written "Karpiel-" / "-Semberecka"
                joined = previous[:-1] + body if previous[-1] == "-" and body[:1] == "-" else f"{previous} {body}"
            if joined and classify_speaker(body) is None and is_label(joined):
                pieces[-1][1].pop()
                label = joined
            elif is_label(body):
                label = body
        if label is None:
            pieces[-1][1].append(line)
        else:
            pieces.append((unicodedata.normalize("NFC", label), []))
    return pieces


# Page-break block: footer (page number + stenographer initials), the title, and the committee line(s):
#   56 m.h.  /  Pełny Zapis Przebiegu Posiedzenia:  /  Komisji Finansów Publicznych (nr 12)
# Title variants: any case, "Pełny apis ...", doubled. Committee lines start with "Komisj" and end with "(nr N)".
_TITLE = re.compile(r"pe[łl]ny\s+(?:za|a)?pis\s+przebiegu\s+posiedzenia", re.I)
_INITIALS_TOKEN = r"(?:[^\W\d_][.,\\]+){1,4}[^\W\d_]?"  # "m.h." "k.k.m." "I.W.T" (not "tys." or "Dziękuję.")
_FOOTER = re.compile(rf"(?:\d{{1,4}}\s+)?(?:{_INITIALS_TOKEN}\s*){{1,6}}(?:\s+\d{{1,4}})?")
# In the pinned data pdftotext's footer was glued onto a hyphenated word ("pro-" + "b.m. 5" became "prob.m. 5").
_FUSED_FOOTER = re.compile(r"(.*?[a-ząćęłńóśźż])((?:[a-z]\.){2,3}(?:\s*,\s*(?:[a-z]\.){2,3})*)\s+\d{1,4}")
_COMMITTEE_END = re.compile(r"\((?:[Nn]r|NR)\.? ?\d+\)?\s*[,.]?\s*$")
_COMMITTEE_WINDOW = 4  # lines


def _after_title(line):
    """Text after the (possibly doubled) title, or None if `line` is not a title line.

    The colon may be missing only when the title is the whole line."""
    rest, found = line, False
    while match := _TITLE.match(rest):
        found = True
        rest = rest[match.end():].strip()
        colon = rest.startswith(":")
        rest = rest.lstrip(":").strip()
        if rest and not colon:
            return None
    return rest if found else None


def _committee_end(lines, first, first_text=None):
    """Index after the committee lines that start at `first`, or None if no "(nr N)" ends them."""
    for k in range(first, min(len(lines), first + _COMMITTEE_WINDOW)):
        if _COMMITTEE_END.search(first_text if k == first and first_text is not None else lines[k]):
            k += 1
            while k < len(lines) and lines[k].startswith("Komisj") and _COMMITTEE_END.search(lines[k]):
                k += 1
            return k
    return None


def _headless_block(lines, i, out):
    """A block without its title line: committee lines at `i` right after a footer."""
    return lines[i].startswith("Komisj") and bool(out) and _is_footer(out[-1]) and _committee_end(lines, i) is not None


def _is_footer(line):
    letters = len(re.findall(r"[^\W\d_]", line))  # two initials at least: "2020 r." is a year, "6 r.g" a footer
    return len(line) <= 30 and bool(re.search(r"\d", line)) and letters >= 2 and bool(_FOOTER.fullmatch(line))


def _is_lone_footer(line):
    """A footer on its own, with no title after it: it has to be clearly one ("12 m.c.", "r.k. 7")."""
    return _is_footer(line) and len(re.findall(r"[.,\\]", line)) >= 2


def strip_page_blocks(lines):
    """(lines without page-break blocks, counts). A word hyphenated across a block is rejoined.

    The counts are {"blocks", "rejoined" (hyphenated words), "fused" (glued footers), "lone_footers"}."""
    lines = [s for s in (line.strip() for line in lines) if s]
    out, counts, i, n = [], {"blocks": 0, "rejoined": 0, "fused": 0}, 0, len(lines)
    while i < n:
        rest = _after_title(lines[i])
        if rest is not None:  # title line (the committee text may follow on it)
            first = i if rest else i + 1
            has_committee = bool(rest) or (i + 1 < n and lines[i + 1].startswith("Komisj"))
            end = _committee_end(lines, first, rest or None) if has_committee else i + 1
            if end is None:  # no "(nr N)": drop the title and, if it stands alone, one committee line
                end = i + 1 if rest else i + 2
        elif _headless_block(lines, i, out):  # the title line is missing (dropped before this module existed)
            end = _committee_end(lines, i)
        else:
            out.append(lines[i])
            i += 1
            continue
        counts["blocks"] += 1
        glue = False
        if out and _is_footer(out[-1]):
            out.pop()
        elif out and len(out[-1]) > 12 and (fused := _FUSED_FOOTER.fullmatch(out[-1])):
            out[-1], glue = fused.group(1), True
            counts["fused"] += 1
        if out and not glue and re.search(r"[a-ząćęłńóśźż]-$", out[-1]) and end < n and lines[end][:1].islower():
            out[-1], glue = out[-1][:-1], True
            counts["rejoined"] += 1
        if glue and end < n:
            out[-1] += lines[end]
            end += 1
        i = end
    kept = [line for line in out if not _is_lone_footer(line)]  # a footer whose title was filtered out earlier
    counts["lone_footers"] = len(out) - len(kept)
    return kept, counts


def turn_text(lines):
    """Text of a turn: lines joined, soft hyphenation undone, spaces collapsed."""
    return re.sub(r"[ \t]+", " ", dehyphenate("\n".join(lines))).strip()


def count_tokens(texts):
    """cl100k_base token counts of `texts` (also used by clean_sejm_committee_transcripts.py)."""
    import tiktoken
    return [len(ids) for ids in tiktoken.get_encoding("cl100k_base").encode_ordinary_batch(texts)]


# ------------------------------------------------------------------ extract_all
EMAIL = re.compile(r"[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,}")
PESEL = re.compile(r"(?<!\d)(\d{11})(?!\d)")
NIP = re.compile(r"(?<!\d)(\d{10})(?!\d)")
REGON = re.compile(r"(?<!\d)(\d{9}|\d{14})(?!\d)")
PHONE = re.compile(r"(?i)\b(tel\.?|telefon|fax)\b[:. ]*\+?\d[\d ()-]{6,}")
IBAN = re.compile(r"\b[A-Z]{2}\d{2}[ ]?(?:[ ]?\d{4}){4,7}\b")


def pesel_ok(d: str) -> bool:
    w = [1, 3, 7, 9, 1, 3, 7, 9, 1, 3]
    s = sum(int(a) * b for a, b in zip(d[:10], w)) % 10
    return (10 - s) % 10 == int(d[10])


def nip_ok(d: str) -> bool:
    w = [6, 5, 7, 2, 3, 4, 5, 6, 7]
    s = sum(int(a) * b for a, b in zip(d[:9], w)) % 11
    return s % 10 == int(d[9])


def regon_ok(d: str) -> bool:
    if len(d) == 9:
        w = [8, 9, 2, 3, 4, 5, 6, 7]
        s = sum(int(a) * b for a, b in zip(d[:8], w)) % 11
        return s % 10 == int(d[8])
    # GUS weights for the 14-digit REGON; the 14th digit is the check digit.
    w = [2, 4, 8, 5, 0, 9, 7, 3, 6, 1, 2, 4, 8]
    s = sum(int(a) * b for a, b in zip(d[:13], w)) % 11
    return s % 10 == int(d[13])


def redact(text: str) -> tuple[str, int]:
    n = 0

    def sub(replacement):
        def repl(m):
            nonlocal n
            out = replacement if isinstance(replacement, str) else replacement(m)
            n += out != m.group(0)  # a checksum-failing PESEL/NIP/REGON comes back unchanged
            return out
        return repl

    text = EMAIL.sub(sub(lambda m: "[ADRES_EMAIL]" if "@" in m.group(0) else "[DANE_NUMERY]"), text)
    text = PESEL.sub(sub(lambda m: "[DANE_NUMERY]" if pesel_ok(m.group(1)) else m.group(0)), text)
    text = NIP.sub(sub(lambda m: "[DANE_NUMERY]" if nip_ok(m.group(1)) else m.group(0)), text)
    text = REGON.sub(sub(lambda m: "[DANE_NUMERY]" if regon_ok(m.group(1)) else m.group(0)), text)
    text = PHONE.sub(sub("[DANE_KONTAKTOWE]"), text)
    text = IBAN.sub(sub("[DANE_NUMERY]"), text)
    return text, n


def fetch_json(url, retries=3, timeout=30):
    req = urllib.request.Request(url, headers={"User-Agent": "committee-corpus/0.1"})
    last = None
    for _ in range(retries):
        try:
            with urllib.request.urlopen(req, timeout=timeout) as r:
                return json.loads(r.read())
        except Exception as e:  # noqa: BLE001 - retry any transport failure
            last = e
    raise last


def probe(terms):
    """Enumerate committees and sittings per term into sejm_cache/api."""
    api = CACHE / "api"
    api.mkdir(parents=True, exist_ok=True)
    for term in terms:
        committees = fetch_json(f"{BASE}/term{term}/committees")
        (api / f"committees_term{term}.json").write_text(
            json.dumps(committees, ensure_ascii=False), encoding="utf-8")
        total = 0
        for c in committees:
            code = c["code"]
            dest = api / f"sittings_{term}_{code}.json"
            if dest.exists():
                sittings = json.loads(dest.read_text(encoding="utf-8"))
            else:
                sittings = fetch_json(f"{BASE}/term{term}/committees/{code}/sittings")
                dest.write_text(json.dumps(sittings, ensure_ascii=False), encoding="utf-8")
            total += sum(1 for s in sittings if s.get("num"))
        print(f"term {term}: {len(committees)} committees, {total} sittings", flush=True)


def download(terms):
    """Download zapis PDFs with cache and per-term manifest."""
    pdfdir = CACHE / "pdf"
    pdfdir.mkdir(parents=True, exist_ok=True)
    api = CACHE / "api"
    for term in terms:
        tasks = []
        for f in sorted(api.glob(f"sittings_{term}_*.json")):
            code = f.stem.split("_", 2)[2]
            for s in json.loads(f.read_text(encoding="utf-8")):
                if s.get("num"):
                    tasks.append((code, s["num"]))

        def fetch(t):
            code, num = t
            dest = pdfdir / f"t{term}_{code}_{num}.pdf"
            if dest.exists() and dest.stat().st_size > 100:
                return {"code": code, "num": num, "status": "cached", "bytes": dest.stat().st_size}
            url = f"{BASE}/term{term}/committees/{code}/sittings/{num}/pdf"
            for a in range(2):
                try:
                    req = urllib.request.Request(url, headers={"User-Agent": "committee-corpus/0.1"})
                    with urllib.request.urlopen(req, timeout=60) as r:
                        data = r.read()
                    if data[:5] == b"%PDF-":
                        dest.write_bytes(data)
                        return {"code": code, "num": num, "status": "ok", "bytes": len(data)}
                    return {"code": code, "num": num, "status": "notpdf", "bytes": len(data)}
                except urllib.error.HTTPError as e:
                    return {"code": code, "num": num, "status": f"http{e.code}", "bytes": 0}
                except Exception as e:  # noqa: BLE001
                    if a == 1:
                        return {"code": code, "num": num, "status": "error", "bytes": 0, "err": repr(e)[:80]}

        manifest = api / f"dl_manifest_{term}.jsonl"
        done = set()
        if manifest.exists():
            for line in open(manifest, encoding="utf-8"):
                try:
                    r = json.loads(line)
                    if r["status"] not in ("error",):
                        done.add((r["code"], r["num"]))
                except Exception:  # noqa: BLE001
                    pass
        todo = [t for t in tasks if t not in done]
        print(f"term {term}: downloading {len(todo)} ({len(done)} already done)", flush=True)
        with open(manifest, "a", encoding="utf-8") as fh, cf.ThreadPoolExecutor(48) as ex:
            for i, fut in enumerate(cf.as_completed([ex.submit(fetch, t) for t in todo])):
                fh.write(json.dumps(fut.result()) + "\n")
                if (i + 1) % 250 == 0:
                    print(f"{i + 1}/{len(todo)}", flush=True)


def extract(terms):
    """Parse downloaded PDFs into redacted speaker turns (sejm_cache/parsed)."""
    outdir = CACHE / "parsed"
    outdir.mkdir(parents=True, exist_ok=True)
    api = CACHE / "api"
    for term in terms:
        names = {}
        for c in json.loads((api / f"committees_term{term}.json").read_text(encoding="utf-8")):
            names[c["code"]] = c.get("name") or c.get("prettyName") or c["code"]
        dates = {}
        for f in sorted(api.glob(f"sittings_{term}_*.json")):
            code = f.stem.split("_", 2)[2]
            for s in json.loads(f.read_text(encoding="utf-8")):
                if s.get("num"):
                    dates[(code, s["num"])] = s.get("date")

        jobs = []
        for line in open(api / f"dl_manifest_{term}.jsonl", encoding="utf-8"):
            r = json.loads(line)
            if r["status"] in ("ok", "cached"):
                p = CACHE / "pdf" / f"t{term}_{r['code']}_{r['num']}.pdf"
                if p.exists():
                    jobs.append((r["code"], r["num"], p))
        stats = {"pdfs": len(jobs), "type": {}, "turns": 0, "chars": 0, "pii": 0, "parse_fail": []}

        def do_parse(job):
            code, num, p = job
            try:
                return job, parse_pdf(str(p))
            except Exception as e:  # noqa: BLE001
                return job, ("__fail__", None, repr(e)[:100])

        with open(outdir / f"turns_{term}.jsonl", "w", encoding="utf-8") as fh, cf.ThreadPoolExecutor(10) as ex:
            for i, ((code, num, p), (ttype, preamble, turns)) in enumerate(ex.map(do_parse, jobs)):
                if ttype == "__fail__":
                    stats["parse_fail"].append({"code": code, "num": num, "err": turns})
                    continue
                stats["type"][ttype] = stats["type"].get(ttype, 0) + 1
                if ttype != "pelny_zapis" or not turns:
                    continue
                content = hashlib.sha1("␟".join(t for _, t in turns).encode()).hexdigest()[:16]
                for ti, (sp, tx) in enumerate(turns):
                    tx, n = redact(re.sub(r"[ \t]+", " ", tx).strip())
                    if len(tx) < MIN_TURN_CHARS:
                        continue
                    row = {
                        "term": str(term),
                        "committee_code": code,
                        "committee_name": names.get(code, code),
                        "sitting_num": num,
                        "date": dates.get((code, num)),
                        "turn_idx": ti,
                        "speaker": sp.strip(),
                        "text": tx,
                        "content_sha1": content,
                        "source_url": f"{BASE}/term{term}/committees/{code}/sittings/{num}/pdf",
                    }
                    fh.write(json.dumps(row, ensure_ascii=False) + "\n")
                    stats["turns"] += 1
                    stats["chars"] += len(tx)
                    stats["pii"] += n
                if (i + 1) % 500 == 0:
                    print(f"parsed {i + 1}/{len(jobs)}", flush=True)
        print(json.dumps(stats, ensure_ascii=False)[:600], flush=True)


# ------------------------------------------------------------------ build_dataset
def shard_stats(rows, attrs):
    """Content-derived stats of a shard (also used by clean_sejm_committee_transcripts.py).

    `rows` are the parquet rows, `attrs` the parallel attribution sidecar lines.
    """
    dates = [a["date"] for a in attrs if a["date"]]
    return {
        "kept": len(rows),
        "sittings": len({(a["term"], a["committee_code"], a["sitting_num"]) for a in attrs}),
        "committees": len({(a["term"], a["committee_code"]) for a in attrs}),
        "unique_speaker_labels": len({a["speaker"] for a in attrs}),
        "tokens": sum(r["token_count"] for r in rows),
        "characters": sum(len(r["text"]) for r in rows),
        "date_min": min(dates), "date_max": max(dates),
    }


def build(terms=(9, 10), outdir="."):
    """Dedup parsed turns and write the canonical DynaWord artifacts."""
    import pyarrow as pa
    import pyarrow.parquet as pq

    rows = []
    for term in terms:
        f = CACHE / "parsed" / f"turns_{term}.jsonl"
        if f.exists():
            rows += [json.loads(l) for l in open(f, encoding="utf-8")]

    n_raw = len(rows)
    rows, dedup_dropped, exact_dup = dedup_turns(rows)
    # Speaker allowlist (see classify_speaker). A dropped turn leaves no marker: every row is
    # one turn, so nothing else is cut and the surviving ids keep their `turn_idx` gaps.
    n_deduped = len(rows)
    rows = [r for r in rows if classify_speaker(r["speaker"])]
    not_official = n_deduped - len(rows)

    out_rows, attrs = [], []
    for r, tokens in zip(rows, count_tokens([r["text"] for r in rows])):
        rid = row_id(r)
        out_rows.append({
            "id": rid, "text": r["text"], "source": SOURCE, "added": ADDED,
            "created": r["date"] or "", "token_count": tokens,
            "license": LICENSE, "author": r["speaker"],
        })
        attrs.append({k: r[k] for k in ATTRIBUTION_KEYS} | {"id": rid})

    root = pathlib.Path(outdir) / "data" / SOURCE
    root.mkdir(parents=True, exist_ok=True)
    schema = pa.schema([(f, pa.int64() if f == "token_count" else pa.string()) for f in FIELDS])
    pq.write_table(pa.Table.from_pylist(out_rows, schema=schema),
                   root / f"{SOURCE}.parquet", compression="zstd")
    with open(root / f"{SOURCE}.attribution.jsonl", "w", encoding="utf-8") as fh:
        for a in attrs:
            fh.write(json.dumps(a, ensure_ascii=False, sort_keys=True) + "\n")

    stats = {
        "discovered_sittings": 9175, "sittings_with_pdf": 8658,
        "sittings_no_pdf_upstream": 455, "sittings_fetch_failed": 62,
        "rows_raw_extracted": n_raw,
        "rejected": dedup_dropped + exact_dup + not_official,
        "rejected_joint_sitting_dup": dedup_dropped, "rejected_exact_dup": exact_dup,
        "rejected_not_official_speaker": not_official,
        **shard_stats(out_rows, attrs), "added": ADDED,
    }
    (root / f"{SOURCE}.stats.json").write_text(
        json.dumps(stats, ensure_ascii=False, indent=2, sort_keys=True) + "\n", encoding="utf-8")
    print(json.dumps(stats, ensure_ascii=False, indent=1))


def main(argv):
    cmd, terms = argv[1], [int(t) for t in argv[2:]]
    if cmd == "probe":
        probe(terms)
    elif cmd == "download":
        download(terms)
    elif cmd == "extract":
        extract(terms)
    elif cmd == "build":
        build()
    elif cmd == "all":
        probe(terms)
        download(terms)
        extract(terms)
        build()
    else:
        raise SystemExit(__doc__)


if __name__ == "__main__":
    main(sys.argv)