Presnejší výber projektov

README.md

@@ -1160,7 +1160,7 @@ upozornenie na neúplnosť, nezamieňať autora dokumentu s autorom práce a pri
 sa nevysvetľujú odhadom; verzia dát neoznačuje verziu programu.
 Tieto pokyny ovplyvňujú správanie Claude, jeho finálny text však náš backend
 nemôže programovo vynútiť. Po aktualizácii už nahratých Skills nahraď ich
-novými ZIPmi z `packages/claude/dist/` (verzia 1.4.0) a over správanie v novom chate.
+novými ZIPmi z `packages/claude/dist/` (verzia 1.5.0) a over správanie v novom chate.
 
 ### Nahratie Skills do webového Claude
 
@@ -1513,6 +1513,14 @@ Pri názve a roku práce model dostáva typované fakty a stručné zdroje. RAG
 nepoužívajú grafové `record_id` ani `work_label`; každé tvrdenie musí mať doloženú
 wiki URL. Označenie zdroja ako `S1` nenahrádza citáciu.
 
+Obsahové otázky podporujú presný nadpis práce v úvodzovkách, číslo projektu,
+nečíslovaný projekt, vylúčenie konkrétneho čísla aj otázku na oba projekty.
+Každá práca si zachová vlastné dôkazy a pokrytie požadovaných aspektov.
+Odpoveď „obe“ vyžaduje doplnenie pôvodnej otázky z predchádzajúceho spresnenia
+v Claude; stateless backend si konverzáciu nedomýšľa. Nadpisy úloh na ďalšie
+stretnutie označujú plán. Otázka na skutočne používané metódy vyberá záznamy
+o používaní alebo implementácii, nie samotné pokyny na štúdium či návrh.
+
 Pri obsahovom porovnaní viacerých študentov sa pre každého načíta požadovaný typ
 práce z rovnakého SQLite snapshotu; všetky podklady naďalej podliehajú spoločnému
 tokenovému rozpočtu. Zadanie a zaznamenaný stav sa kontrolujú a zobrazujú oddelene.

packages/claude/dist/packages.json

@@ -3,12 +3,12 @@
     {
       "archive": "zpwiki-rag.zip",
       "name": "rag",
-      "sha256": "0c4b1a65d7ec97e89505000c7f60239ae220098ba11dc8a6ae9fca8be396f151"
+      "sha256": "8e5ab92284ee6f53d10e468cb4edee6cfd354ae869583673cbb6aea8ea9ca437"
     },
     {
       "archive": "zpwiki-graphrag.zip",
       "name": "graphrag",
-      "sha256": "cbfd609ec66c24a03e4c75b33e5a92438a1131c25019df8f2ea522bc917ba5e3"
+      "sha256": "99a9ea36b439d6b14edc35c2d4d0c1c2cf97139f78e8fd73b8ce2347d82b1092"
     }
   ],
   "schema_version": 1

packages/claude/graphrag/SKILL.md

@@ -10,12 +10,16 @@ For `/graphrag <question>`, send the text after the leading `/graphrag` as the q
 to `zpwiki_graphrag`. Preserve every condition. If no question follows, ask for one.
 Use this graph tool rather than RAG when the user explicitly selects `/graphrag`.
 
-For every call, copy the latest user question verbatim after removing only its leading
+For a complete question, copy the latest user question verbatim after removing only its leading
 command. Do not reuse an earlier question or an example, paraphrase, silently correct a
 name, add a year or drop a condition. Before calling, check names, work types, years,
 negations and comparisons against the current message. Before presenting the result,
 check that its `query` matches that question. A mismatch is not a usable answer.
 If clarification is needed, ask specifically for the missing or ambiguous condition.
+For a short reply selecting the immediately preceding options, reconstruct that original
+full question and apply only the selection. Preserve every condition; if context is missing,
+ask for it. Compare the returned `query` against that resolved full question. A text question
+about methods or progress belongs to RAG; preserve any backend guidance instead of inventing graph evidence.
 For multiple explicit commands in one message, handle each question separately in order;
 keep all conditions belonging to each question together.
 

packages/claude/mcp_server.py

@@ -20,11 +20,16 @@ from starlette.responses import JSONResponse
 
 # Host-model rules belong to MCP initialization and Skills, not tool-result data.
 QUESTION_POLICY = (
-    'For each tool call, copy the latest user question verbatim after removing only its leading '
+    'For a complete question, copy the latest user question verbatim after removing only its leading '
     '/rag or /graphrag command. Keep names, work types, years, negations, comparisons and every condition. '
     'Never reuse a previous question or an example, paraphrase it or split its conditions across searches. '
     'If the user supplies multiple explicit commands, handle each exact question separately in order. '
-    'Before calling, compare the query with the current user message. Respect the explicitly selected engine. '
+    'For a short reply selecting options from the immediately preceding clarification, reconstruct the original '
+    'full question and apply only that selection. Preserve its person, year, work type and requested aspects. '
+    'Use exact quoted work headings for a selected work; if the user chooses both, ask about both works in one full query. '
+    'If that context is missing, ask for it instead of guessing. '
+    'Before calling, compare the query with the current complete question or its explicitly resolved clarification. '
+    'Respect the explicitly selected engine. '
     'The returned query is audit data: compare it with the current question before presenting its answer. '
     'If they differ, do not present the mismatched answer. Ask for a concrete clarification when needed. '
 )

packages/claude/rag/SKILL.md

@@ -10,12 +10,18 @@ For `/rag <question>`, send the text after the leading `/rag` as the question to
 `zpwiki_rag`. Preserve every condition. If no question follows, ask for one.
 Use this text-search tool rather than GraphRAG when the user explicitly selects `/rag`.
 
-For every call, copy the latest user question verbatim after removing only its leading
+For a complete question, copy the latest user question verbatim after removing only its leading
 command. Do not reuse an earlier question or an example, paraphrase, silently correct a
 name, add a year or drop a condition. Before calling, check names, work types, years,
 negations and comparisons against the current message. Before presenting the result,
 check that its `query` matches that question. A mismatch is not a usable answer.
 If clarification is needed, ask specifically for the missing or ambiguous condition.
+For a short reply selecting the immediately preceding options, reconstruct that original
+full question and apply only the selection. Preserve the person, year, work type and
+requested aspects. For one work, use its exact quoted heading; for "both", request both
+works in one query and keep their evidence separate. Do not search the words "both" alone.
+If the preceding question/options are unavailable, ask for them rather than guessing.
+Compare the returned `query` against this resolved full question in that case.
 For multiple explicit commands in one message, handle each question separately in order;
 keep all conditions belonging to each question together.
 

scripts/build_claude_packages.py

@@ -11,7 +11,7 @@ import zipfile
 ROOT = Path(__file__).resolve().parents[1]
 BASE = ROOT / 'packages/claude'
 ENGINES = ('rag', 'graphrag')
-PACKAGE_VERSION = '1.4.0'
+PACKAGE_VERSION = '1.5.0'
 
 
 def json_bytes(value):

test/test_work_scope_selection.py

@@ -0,0 +1,152 @@
+"""Exact/both/negated work selection and proof of actual use, not future tasks."""
+import json
+import sqlite3
+
+import pytest
+
+from tools.answer_evaluation.rag_preparation import prepare_named_content
+from tools.answer_evaluation.rag_evidence import rag_evidence_context,project_number,content_sections
+from tools.answer_evaluation.verified_rag import generate_verified_rag
+from tools.answer_evaluation.content_selection import facets_for
+from tools.retrieval.work_selector import parse_work_selector
+from tools.retrieval.question_constraints import requested_years,unsupported_constraint
+from tools.answers import answer_delivery
+from tools.rag.llm_context import compact_rag_payload
+
+
+@pytest.fixture
+def projects(tmp_path):
+    db=tmp_path/'index.sqlite';path='pages/students/2016/eva_nova/README.md'
+    with sqlite3.connect(db) as c:
+        c.execute('CREATE TABLE documents(path,title,author,published)')
+        c.execute('CREATE TABLE chunks(document_path,text,heading_paths_json,published,chunk_index)')
+        c.execute('INSERT INTO documents VALUES(?,?,?,?)',(path,'Eva Nová','Autor dokumentu',1))
+        for i,(label,text) in enumerate([
+            ('Diplomový projekt 2020','Hotové:\n- Funguje databáza SQLite.\nÚlohy na ďalšie stretnutie:\n- Naštudujte si ako sa používa Redis.'),
+            ('Diplomový projekt 2 2020','Stav:\n- Implementovaný parser pomocou Python.\nÚlohy na ďalšie stretnutie:\n- urobte návrh metódy PageRank.\nDo ďalšieho stretnutia:\n- Naštudujte si ako sa používa Promise.')]):
+            c.execute('INSERT INTO chunks VALUES(?,?,?,?,?)',(path,text,json.dumps([['Eva Nová',label]]),1,i))
+    return db
+
+
+def prepare(db,q):
+    raw={'status':'ok','reason':None,'sources':[],'context':'','complete':False,'truncated':True,'truncation_reasons':['result_limit']}
+    return compact_rag_payload(prepare_named_content(db,q,raw))
+
+
+def select(messages):
+    context=json.loads(messages[1]['content'])['context']
+    a={'status':'ok','claims':[],'source_urls':[],
+       'evidence_ids':[u['evidence_id'] for u in context.get('content_candidates',[])]}
+    return {'choices':[{'message':{'content':json.dumps(a)}}]}
+
+
+@pytest.mark.parametrize('phrase',[
+    'pri práci "Diplomový projekt 2020" (nie Diplomový projekt 2)',
+    'pri nečíslovanom diplomovom projekte v roku 2020',
+    'pri diplomovom projekte bez čísla v roku 2020',
+    'pri diplomovom projekte v roku 2020 okrem projektu 2',
+])
+def test_exact_unnumbered_and_excluded_number_select_the_actual_work(projects,phrase):
+    q='Aké metódy používala Eva Nová '+phrase+'?'
+    assert not unsupported_constraint(q) and requested_years(q)==[2020]
+    p=prepare(projects,q);assert p['status']=='ok'
+    assert [s['work_label'] for s in p['work_scopes']]==['Diplomový projekt 2020']
+    r=generate_verified_rag(q,p,select)
+    assert r['accepted_for_delivery'] and 'SQLite' in r['answer']
+    assert all(x not in r['answer'] for x in ['Python','PageRank','Promise','Redis'])
+
+
+def test_numbered_work_keeps_actual_methods_and_rejects_future_task_evidence(projects):
+    q='Aké metódy používala Eva Nová pri diplomovom projekte 2 v roku 2020?'
+    p=prepare(projects,q);c=rag_evidence_context(q,p)
+    assert all(u['phase'] not in {'planned','assignment'} for u in c['content_candidates'])
+    r=generate_verified_rag(q,p,select)
+    assert r['accepted_for_delivery'] and 'Python' in r['answer']
+    assert 'PageRank' not in r['answer'] and 'Promise' not in r['answer'] and 'SQLite' not in r['answer']
+    bad={'status':'ok','claims':[],'source_urls':[s['source_url'] for s in c['sources']],
+         'evidence_quotes':[{'source_id':c['sources'][0]['source_id'],'quote':'- urobte návrh metódy PageRank.'}]}
+    r=generate_verified_rag(q,p,lambda _:{'choices':[{'message':{'content':json.dumps(bad)}}]})
+    assert not r['accepted_for_delivery'] and 'quote_outside_delivered_candidates' in r['attempts'][-1]['issues']
+
+
+@pytest.mark.parametrize('word',['oboch','obidvoch','všetkých'])
+def test_each_requested_work_has_its_own_methods_and_heading(projects,word):
+    q=f'Aké metódy používala Eva Nová pri {word} diplomových projektoch v roku 2020?'
+    p=prepare(projects,q);c=rag_evidence_context(q,p)
+    assert c['requirements']['separate_works'] and len(p['work_scopes'])==2
+    r=generate_verified_rag(q,p,select)
+    assert r['accepted_for_delivery'] and r['answer'].count('**Eva Nová — Diplomový projekt')==2
+    first,second=r['answer'].split('**Eva Nová — Diplomový projekt 2 2020')
+    assert 'SQLite' in first and 'Python' not in first and 'Python' in second
+    assert 'PageRank' not in r['answer'] and 'Promise' not in r['answer']
+
+
+def test_omitting_a_second_work_with_evidence_is_rejected_even_for_the_same_person_and_year(projects):
+    q='Aké metódy používala Eva Nová pri oboch diplomových projektoch v roku 2020?'
+    p=prepare(projects,q)
+    def incomplete(messages):
+        c=json.loads(messages[1]['content'])['context']
+        a={'status':'ok','claims':[],'source_urls':[],'evidence_ids':[u['evidence_id'] for u in c['content_candidates'] if u['work_label']=='Diplomový projekt 2020']}
+        return {'choices':[{'message':{'content':json.dumps(a)}}]}
+    r=generate_verified_rag(q,p,incomplete)
+    assert not r['accepted_for_delivery'] and 'missing_methods_evidence' in r['attempts'][-1]['issues']
+
+
+def test_missing_methods_are_reported_for_the_right_work_without_stealing_another_works_evidence(projects):
+    with sqlite3.connect(projects) as c:
+        c.execute("UPDATE chunks SET text='Úlohy na ďalšie stretnutie:\n- Použite metódu BERT.' WHERE chunk_index=1")
+    q='Aké metódy používala Eva Nová pri oboch diplomových projektoch v roku 2020?'
+    r=generate_verified_rag(q,prepare(projects,q),select)
+    assert r['accepted_for_delivery'] and r['answer_coverage']['status']=='partial'
+    assert 'SQLite' in r['answer'] and 'BERT' not in r['answer']
+    assert 'Diplomový projekt 2 2020' in r['answer'] and 'skutočne použitých metódach' in r['answer']
+
+
+def test_plans_remain_available_as_plans_with_natural_verbs(projects):
+    q='Aké plánované úlohy mala Eva Nová pri oboch diplomových projektoch v roku 2020?'
+    r=generate_verified_rag(q,prepare(projects,q),select)
+    assert r['accepted_for_delivery']
+    assert 'Urobiť návrh metódy PageRank.' in r['answer'] and 'Naštudovať si ako sa používa Promise.' in r['answer']
+    assert 'urobte' not in r['answer'] and 'Naštudujte' not in r['answer']
+
+
+def test_unknown_requested_work_is_not_silently_dropped(projects):
+    q='Porovnaj metódy Evy Novej pri "Diplomový projekt 2020" a "Diplomový projekt 3 2020".'
+    p=prepare(projects,q)
+    assert p['status']=='ambiguous' and p['reason']=='unresolved_work_selection'
+
+
+def test_short_followup_needs_context_instead_of_global_retrieval(monkeypatch):
+    def forbidden(*a,**kw):pytest.fail('A bare follow-up must not search or call an LLM')
+    monkeypatch.setattr(answer_delivery,'build_rag_context',forbidden)
+    r=answer_delivery.deliver_answer('daj obe',engine='rag',complete=forbidden)
+    assert r['status']=='ambiguous' and r['reason']=='missing_followup_context'
+
+
+def test_negative_selector_is_not_a_positive_number_and_literal_title_years_are_not_filters():
+    q='Aké metódy používal Ján Holp pri "Diplomový projekt 2020" (nie Diplomový projekt 2)?'
+    selector=parse_work_selector(q)
+    assert project_number(q) is None and selector.excluded_numbers==(2,) and requested_years(q)==[2020]
+    assert selector.matches('Diplomový projekt 2020') and not selector.matches('Diplomový projekt 2 2020')
+    assert requested_years('Kto má názov "Projekt 2 o svete 2099"?')==[]
+    assert not parse_work_selector('Kto má názov "Projekt 2 o svete 2099"?').specific
+    assert unsupported_constraint('Aké metódy používal Ján Holp, nie v roku 2020?')=='exclusion'
+
+
+def test_unimplemented_method_is_not_proof_of_actual_use():
+    assert 'methods' not in facets_for('Metóda BERT ešte nie je implementovaná.','progress',
+                                       'Aké metódy skutočne použila Eva Nová?')
+
+
+def test_scalar_question_also_preserves_exact_work_and_exclusion(projects):
+    q='Aký názov má "Diplomový projekt 2020" Evy Novej (nie Diplomový projekt 2)?'
+    p=prepare(projects,q)
+    assert len(p['work_scopes'])==1 and p['work_scopes'][0]['work_label']=='Diplomový projekt 2020'
+    assert 'Python' not in p['context'] and 'Promise' not in p['context']
+
+
+@pytest.mark.parametrize('heading',['Úlohy na ďalšie stretnutie:','Do ďalšieho stretnutia:','Do ďalšiehio stretnutia:'])
+def test_source_task_headings_cannot_inherit_a_completed_state(heading):
+    sections=content_sections('Stav:\n- Implementovaný parser.\n'+heading+'\n- urobte návrh metódy PageRank.')
+    assert [s['kind'] for s in sections]==['progress','task']
+    assert sections[-1]['phase']=='planned'

tools/answer_evaluation/content_selection.py

@@ -3,7 +3,7 @@ from __future__ import annotations
 
 import re
 from .context_policy import normalized
-from .question_intent import FACET_LABELS, planned_experiments, requested_facets
+from .question_intent import FACET_LABELS, planned_experiments, requested_facets, actual_methods_requested
 
 COMPLETED = (r'\b(?:(?:implementovan|natrenovan|vytvoren|extrahovan|vykonan|vyhodnoten|nameran|'
              r'vyriesen|odstranen|otestovan|porovnan|dosiahnut|dokoncen)(?:y|a|e|u|ou|ych|ym|ymi|om)|'
@@ -38,7 +38,7 @@ def split_units(text: str) -> list[str]:
 
 
 def effective_role(text: str, role: str) -> str:
-    n = normalized(text)
+    n = normalized(re.sub(r'^\s*(?:\d+[.)]|[-+*])\s+','',text))
     if role in {'other','progress'}:
         from .presentation import GOAL_VERBS
         first=n.split()[0] if n else ''
@@ -71,10 +71,11 @@ def facets_for(text: str, role: str, question: str, phase: str | None = None) ->
         if (phase or evidence_phase(text,role))=='result':facets.append('results')
     if re.search(r'\b(?:problem\w*|tazkost\w*|prekazk\w*|chyb\w*|zlyha\w*|nepodar\w*|nevyries\w*)\b', n) and role not in {'assignment','task'}:
         facets.append('problems')
-    if re.search(r'\b(?:metod\w*|technolog\w*|nastroj\w*|pouzi\w*|vyuziv\w*|pomocou|implementovan\w*|natrenovan\w* model\w*)\b', n):
-        actual_use=(re.search(r'\b(?:skutocne|pouziva\w*|pouzil\w*|vyuzival\w*|implementoval\w*)\b',normalized(question)) or
-                    re.search(r'\b(?:pouzit\w*|aplikovan\w*|vyuzit\w*)\s+(?:metod\w*|technolog\w*|nastroj\w*)\b',normalized(question)))
-        if role not in {'assignment','task'} or not actual_use:
+    if re.search(r'\b(?:metod\w*|technolog\w*|nastroj\w*|pouzi\w*|vyuziv\w*|pomocou|implementovan\w*|natrenovan\w* model\w*|indexov\w*|databaz\w*|webov\w* rozhrani\w*)\b', n):
+        actual_use=actual_methods_requested(question)
+        actual_statement=not re.search(NOT_COMPLETED,n) and (re.search(COMPLETED,n) or
+            re.search(r'\b(?:pouziva\w*|pouzil\w*|vyuziva\w*|vyuzil\w*|vieme indexov\w*)\b',n))
+        if not actual_use or (role not in {'assignment','task'} and actual_statement):
             facets.append('methods')
     if re.search(r'\b(?:experiment\w*|meran\w*|test\w*|otest\w*|vyhodnot\w*|benchmark\w*|f1|presnost\w*)\b', n):
         wants_done=re.search(r'\b(?:vykonal\w*|vykonan\w*|otestoval\w*|uskutocnil\w*|uskutocnen\w*|realizovan\w*|vyhodnotil\w*)\b',normalized(question))
@@ -159,13 +160,29 @@ def evidence_units(context: dict, quotes: list[dict] | None = None) -> list[dict
         for other in units)]
 
 
+def scope_groups(context: dict) -> list[tuple]:
+    req=context.get('requirements',{});groups=[]
+    for person in req.get('people',[]):
+        labels=list(dict.fromkeys(s.get('work_label') for s in context.get('work_scopes',[]) if s.get('person')==person))
+        groups.extend((person,label) for label in labels) if req.get('separate_works') and labels else groups.append((person,None))
+    return groups
+
+
+def matches_scope(row: dict, person: str, label: str | None) -> bool:
+    return row.get('person')==person and (label is None or normalized(row.get('work_label'))==normalized(label))
+
+
+def scope_context(context: dict, person: str, label: str | None) -> dict:
+    return {**context,'content_passages':[p for p in context.get('content_passages',[]) if matches_scope(p,person,label)]}
+
+
 def candidates(context: dict) -> list[dict]:
     from .evidence_selection import identify
     facets = context['requirements'].get('facets', [])
     selected = []; seen = set(); units = evidence_units(context)
-    for person in context['requirements']['people']:
+    for person,label in scope_groups(context):
         for facet in facets:
-            relevant = [u for u in units if u['person']==person and facet in u['facets']]
+            relevant = [u for u in units if matches_scope(u,person,label) and facet in u['facets']]
             if facet=='progress' and 'results' in facets and any(u['phase']=='progress' for u in relevant):
                 relevant=[u for u in relevant if u['phase']=='progress']
             if facet!='assignment':relevant.sort(key=lambda u: -unit_score(u['text'],u['kind'],facet))
@@ -186,10 +203,14 @@ def candidates(context: dict) -> list[dict]:
 
 
 def missing_facets(answer: dict, context: dict) -> list[tuple[str,str]]:
+    return list(dict.fromkeys((person,facet) for person,_label,facet in missing_work_facets(answer,context)))
+
+
+def missing_work_facets(answer: dict, context: dict) -> list[tuple]:
     found = evidence_units(context, answer.get('evidence_quotes', []))
-    return [(person,facet) for person in context['requirements']['people']
+    return [(person,label,facet) for person,label in scope_groups(context)
             for facet in context['requirements'].get('facets', [])
-            if not any(row['person']==person and facet in row['facets'] for row in found)]
+            if not any(matches_scope(row,person,label) and facet in row['facets'] for row in found)]
 
 
 def fit_candidates(sent: dict, context: dict, limit: int, encoding: str) -> None:
@@ -200,8 +221,7 @@ def fit_candidates(sent: dict, context: dict, limit: int, encoding: str) -> None
     if counter.encoding is None:
         raise RuntimeError('Missing context tokenizer')
     original=list(context.get('content_candidates',[]))
-    groups=[[row for row in original if row.get('person')==person]
-            for person in context['requirements']['people']]
+    groups=[[row for row in original if matches_scope(row,person,label)] for person,label in scope_groups(context)]
     ordered=[group[i] for i in range(max(map(len,groups),default=0)) for group in groups if i<len(group)]
     selected=[]
     for row in ordered:
@@ -225,10 +245,11 @@ def facet_lines(answer: dict, context: dict) -> list[str]:
     facets=req.get('facets',[]);groups=[];labels={f:FACET_LABELS[f] for f in facets}
     if 'experiments' in facets and planned_experiments(context.get('question','')):
         labels['experiments']='Plánované experimenty a vyhodnotenie'
-    for person in req['people']:
-        group={'subject':evidence_subject(person,context),'items':{},'missing':[]};seen=set()
+    for person,work_label in scope_groups(context):
+        group={'subject':evidence_subject(person,scope_context(context,person,work_label)) if work_label is None else
+               person+' — '+' '.join(work_label.split()),'items':{},'missing':[]};seen=set()
         for facet in facets:
-            rows=[u for u in units if u['person']==person and facet in u['facets']]
+            rows=[u for u in units if matches_scope(u,person,work_label) and facet in u['facets']]
             if facet=='progress' and 'results' in facets and any(u['phase']=='progress' for u in rows):
                 rows=[u for u in rows if u['phase']=='progress']
             if facet!='assignment':rows.sort(key=lambda u:-unit_score(u['text'],u['kind'],facet))

tools/answer_evaluation/evidence_selection.py

@@ -20,10 +20,10 @@ def identify(row: dict, *, required: bool = False) -> dict:
 
 def overview_candidates(context: dict) -> list[dict]:
     """Keep every main assignment item; do not confuse a backlog with goals."""
-    from .content_selection import evidence_units, administrative_only, unit_score
+    from .content_selection import evidence_units, administrative_only, unit_score, scope_groups, matches_scope
     rows=evidence_units(context); selected=[]
-    for person in context['requirements']['people']:
-        own=[row for row in rows if row['person']==person]
+    for person,label in scope_groups(context):
+        own=[row for row in rows if matches_scope(row,person,label)]
         main=[row for row in own if row['kind']=='assignment']
         # Without an explicit assignment, retain a bounded descriptive sample.
         # A plan or meeting history cannot become the main assignment.
@@ -71,11 +71,11 @@ def missing_required_evidence(answer: dict, context: dict) -> list[str]:
 
 def overview_units(answer: dict, context: dict) -> list[dict]:
     """Render all checked assignment items and at most two fallback units per person."""
-    from .content_selection import evidence_units
+    from .content_selection import evidence_units,scope_groups,matches_scope
     rows=evidence_units(context,answer.get('evidence_quotes',[]))
     selected=[]
-    for person in context.get('requirements',{}).get('people',[]):
-        own=[row for row in rows if row['person']==person]
+    for person,label in scope_groups(context):
+        own=[row for row in rows if matches_scope(row,person,label)]
         main=[row for row in own if row['kind']=='assignment']
         for row in main or own[:2]:
             quote=next(q for q in answer['evidence_quotes'] if q['source_id']==row['source_id'] and

tools/answer_evaluation/presentation.py

@@ -108,6 +108,8 @@ GOAL_VERBS = {
     'identifikujte': 'Identifikovať', 'preštudujte': 'Preštudovať',
     'pripravte': 'Pripraviť',
     'vyhodnotte': 'Vyhodnotiť', 'vyhodnnotte': 'Vyhodnotiť',
+    'urobte':'Urobiť','naštudujte':'Naštudovať','pozrite':'Pozrieť',
+    'prečítajte':'Prečítať','pokračujte':'Pokračovať',
 }
 
 
@@ -203,9 +205,10 @@ def no_answer_text(context: dict) -> str:
 
 def missing_aspects(facets: list[str], question: str = '') -> str:
     """Name only the missing requested fields, without empty helper sections."""
-    from .question_intent import planned_experiments
+    from .question_intent import planned_experiments,actual_methods_requested
     labels={'assignment':'zadaní a cieľoch','plans':'plánovaných úlohách','progress':'priebežnom stave',
-            'results':'výsledkoch','problems':'riešených problémoch','methods':'metódach a technológiách',
+            'results':'výsledkoch','problems':'riešených problémoch','methods':('skutočne použitých metódach a technológiách'
+                if actual_methods_requested(question) else 'metódach a technológiách'),
             'experiments':('plánovaných experimentoch' if planned_experiments(question) else 'experimentoch a ich vyhodnotení')}
     values=list(dict.fromkeys(labels.get(f,f) for f in facets))
     if not values:return ''
@@ -231,7 +234,7 @@ def evidence_subject(person: str, context: dict) -> str:
     if len(scopes)==1 and next(iter(scopes))[1] is not None:
         subject+=' ('+str(next(iter(scopes))[1])+')'
     labels={p.get('work_label') for p in passages if p.get('work_label')}
-    if req.get('project_number') is not None and len(labels)==1:
+    if (req.get('project_number') is not None or req.get('exact_work_label')) and len(labels)==1:
         subject=person+' — '+' '.join(next(iter(labels)).split())
     return subject
 

tools/answer_evaluation/question_intent.py

@@ -34,6 +34,16 @@ def facet_mode(question: str) -> bool:
     return any(facet in facets for facet in ['plans','progress','problems','methods','experiments','results'])
 
 
+def actual_methods_requested(question: str) -> bool:
+    return bool(re.search(r'\b(?:skutocne|pouziva\w*|pouzil\w*|vyuzival\w*|implementoval\w*)\b|'
+        r'\b(?:pouzit\w*|aplikovan\w*|vyuzit\w*)\s+(?:metod\w*|technolog\w*|nastroj\w*)\b',normalized(question)))
+
+
+def unresolved_followup(question: str) -> bool:
+    return bool(re.fullmatch(r'(?:(?:daj|uved|ukaz|vypis|porovnaj|chcem|prosim)\s+)?'
+        r'(?:obe|oba|obidv\w*|vsetky|prvy|druhy)(?:\s+(?:prace|projekty))?[.!?]?',normalized(question)))
+
+
 def output_year_requested(question: str) -> bool:
     # A supplied year scopes the evidence; it does not itself ask for a year claim.
     text=normalized(question)
@@ -46,7 +56,7 @@ def graph_needs_text(question: str) -> bool:
     # Explicit graph properties stay on their existing path.
     if re.search(r'\b(?:tag\w*|klucov\w*|kategor\w*|tem\w*|nazov\w*|autor\w*)\b',text):
         return False
-    return bool(set(requested_facets(question)) & {'assignment','plans','problems','experiments','progress','results'})
+    return bool(set(requested_facets(question)) & {'assignment','plans','problems','methods','experiments','progress','results'})
 
 
 def planned_experiments(question: str) -> bool:

tools/answer_evaluation/rag_evidence.py

@@ -128,8 +128,9 @@ def requested_types(question: str, people: list[str]) -> dict[str, str]:
 
 
 def project_number(text: str) -> int | None:
-    match=re.search(r'\bprojekt\w*\s+([1-9]\d?)(?!\d)\b',normalized(text))
-    return int(match[1]) if match else None
+    from tools.retrieval.work_selector import parse_work_selector
+    numbers=parse_work_selector(text).numbers
+    return numbers[0] if len(numbers)==1 else None
 
 
 def academic_windows_metadata(body: str) -> list[tuple]:
@@ -209,6 +210,8 @@ def descriptive_text(text: str, titles=()) -> str:
 
 def academic_content_passages(blocks: list[dict], facts: list[dict], requirements: dict, question: str) -> list[dict]:
     """Project only retrieved text, respecting person, work type and year together."""
+    from tools.retrieval.work_selector import parse_work_selector
+    selector=parse_work_selector(question)
     result = []; requested = requirements['people']
     profiles = [row['document_path'].removesuffix('README.md') for row in blocks
                 if row.get('title') in requested and PROFILE.fullmatch(row.get('document_path', ''))]
@@ -227,7 +230,7 @@ def academic_content_passages(blocks: list[dict], facts: list[dict], requirement
                 continue
             if requirements['unsupported_year'] or (requirements['years'] and scope[1] not in requirements['years']):
                 continue
-            if requirements.get('project_number') is not None and project_number(label or '')!=requirements['project_number']:
+            if not selector.matches(label or ''):
                 continue
             if not descriptive_text(text, titles):
                 continue
@@ -258,9 +261,10 @@ def content_sections(text: str) -> list[dict]:
                                 'zadanie diplomoveho projektu', 'zadanie bakalarskeho projektu',
                                 'navrh na zadanie', 'navrh zadania'}:
             next_kind = 'assignment'
-        elif heading and role_value in {'stav', 'priebezny stav', 'vysledky', 'dosiahnute vysledky', 'dosiahnuty stav'}:
+        elif heading and role_value in {'stav', 'priebezny stav', 'vysledky', 'dosiahnute vysledky', 'dosiahnuty stav','hotove','urobene'}:
             next_kind = 'progress'
-        elif heading and role_value in {'ulohy', 'zasobnik uloh', 'dalsie ulohy', 'plan', 'planovane ulohy'}:
+        elif heading and (role_value in {'ulohy', 'zasobnik uloh', 'dalsie ulohy', 'plan', 'planovane ulohy'} or
+                         re.match(r'^(?:ulohy\s+(?:na|do|pre)\b|do dalsie\w* stretnutia\b)',role_value)):
             next_kind = 'task'
         elif heading and role_value in {'napr','napriklad','priklady','priklad'} and not line[:1].isspace():
             next_kind = 'other'
@@ -269,7 +273,7 @@ def content_sections(text: str) -> list[dict]:
         if next_kind is not None:
             flush(); kind = next_kind
             phase=({'assignment':'assignment','task':'planned','other':'unknown'}.get(kind) or
-                   ('result' if role_value in {'vysledky','dosiahnute vysledky'} else 'progress'))
+                   ('result' if role_value in {'vysledky','dosiahnute vysledky','hotove','urobene'} else 'progress'))
         else:
             lines.append(line)
     flush()
@@ -441,7 +445,9 @@ def rag_evidence_context(question: str, payload: dict) -> dict:
     facts = list({tuple(sorted(row.items())): row for row in facts}.values())
     requested = [person for person in people if text_contains_value(question, person, person=True)]
     requested=list(dict.fromkeys([*payload.get('named_subjects',[]),*requested]))
-    expected_types = requested_types(question, requested)
+    from tools.retrieval.work_selector import parse_work_selector
+    selector=parse_work_selector(question)
+    expected_types = requested_types(selector.positive_text, requested)
     query = normalized(question)
     intent_query = normalized(re.sub(r'[„“"«][^„“”"»]+[“”"»]', ' ', question))
     academic = bool(TYPE_PATTERN.search(query) or re.search(r'\b(?:rok\w* prac\w*|nazov\w* prac\w*)\b', query))
@@ -476,6 +482,7 @@ def rag_evidence_context(question: str, payload: dict) -> dict:
     requirements['years'] = requested_years(question) if academic and not requirements['start_year'] else []
     requirements['unsupported_year'] = any(len(value) != 4 for value in stated_years)
     requirements['project_number'] = project_number(question)
+    requirements['exact_work_label']=selector.labels[0] if len(selector.labels)==1 else None
     if requested:
         facts = [row for row in facts if row['person'] in requested]
     requirements['available_fields'] = {person:[key for key in ['title','year','start_year']
@@ -489,6 +496,11 @@ def rag_evidence_context(question: str, payload: dict) -> dict:
              'aggregation': None, 'answer_candidates': []}
     if content:
         context['content_passages'] = academic_content_passages(blocks, facts, requirements, question)
+        context['work_scopes']=payload.get('work_scopes') or list({
+            (p.get('person'),p.get('work_label')):{k:p.get(k) for k in ['person','work_type','year','work_label']}
+            for p in context['content_passages']}.values())
+        requirements['separate_works']=any(sum(s['person']==person for s in context['work_scopes'])>1 for person in requested)
+        if requirements['separate_works']:requirements['work_scopes']=context['work_scopes']
         if requirements.get('facets'):
             from .content_selection import candidates
             context['content_candidates'] = candidates(context)

tools/answer_evaluation/rag_preparation.py

@@ -18,7 +18,9 @@ def clarify(payload: dict, reason: str, message: str) -> dict:
 
 
 def prepare_named_content(db_file, question: str, payload: dict) -> dict:
-    if not content_question(question):
+    from tools.retrieval.work_selector import parse_work_selector, label_key
+    selector=parse_work_selector(question)
+    if not content_question(question) and not selector.specific:
         return payload
     if re.search(r'\b(?:s tagom|s klucovym slovom|z kategorie|s autorom dokumentu)\b',normalized(question)):
         return clarify(payload,'content_filter_requires_graph',
@@ -53,9 +55,9 @@ def prepare_named_content(db_file, question: str, payload: dict) -> dict:
                            'Uveď jeho presné celé meno; ostatné osoby nebudem používať ako náhradu.')
         if not named:
             return payload
-        types=requested_types(question,[r['title'] for r in named])
+        types=requested_types(selector.positive_text,[r['title'] for r in named])
         years=requested_years(question)
-        selected=[]
+        selected=[];scopes=[]
         for person in named:
             rows=list(conn.execute('SELECT text,heading_paths_json FROM chunks WHERE document_path=? '
                                    'AND COALESCE(published,1)=1 ORDER BY chunk_index',(person['path'],)))
@@ -68,15 +70,22 @@ def prepare_named_content(db_file, question: str, payload: dict) -> dict:
                     if not scope or (types.get(person['title']) and scope[0]!=types[person['title']]) or (years and scope[1] not in years):
                         continue
                     label=label or WORK_LABELS[scope[0]]+(f' {scope[1]}' if scope[1] is not None else '')
-                    if project_number(question) is not None and project_number(label)!=project_number(question):
+                    if not selector.matches(label):
                         continue
                     records[(scope,normalized(label))]=label
                     if (scope,normalized(label),text) not in seen:
                         seen.add((scope,normalized(label),text));frames.append('Sekcia: '+label+'\n'+text)
-            if len(records)>1:
+            if selector.multiple and (any(label not in {label_key(v) for v in records.values()} for label in selector.labels) or
+                    any(not any(project_number(v)==number for v in records.values()) for number in selector.numbers)):
+                return clarify(payload,'unresolved_work_selection',
+                    'Niektoré z požadovaných označení prác osoby '+person['title']+' sa v indexe nenašli. '
+                    'Uveď presné nadpisy zo zdroja; chýbajúcu prácu nevynechám z porovnania potichu.')
+            if len(records)>1 and not selector.multiple:
                 options='; '.join(dict.fromkeys(records.values()))
                 return clarify(payload,'ambiguous_work',f'Ktorú prácu osoby {person["title"]} máš na mysli? '
                                f'V indexe sú tieto možnosti: {options}. Uveď typ práce a rok alebo presné označenie projektu.')
+            scopes.extend({'person':person['title'],'work_type':scope[0],'year':scope[1],'work_label':label}
+                          for (scope,_key),label in records.items())
             from .content_selection import prioritize_frames
             frames=prioritize_frames(frames,question)
             source=next((s for s in payload.get('sources',[]) if s.get('document_path')==person['path']),None)
@@ -92,4 +101,4 @@ def prepare_named_content(db_file, question: str, payload: dict) -> dict:
                 selected.append(source)
         selected=[{**source,'source_id':f'S{i}'} for i,source in enumerate(selected,1)]
         return {**payload,'sources':selected,'source_count':len(selected),'context':build_context_text(selected),
-                'named_subjects':[p['title'] for p in named]}
+                'named_subjects':[p['title'] for p in named],'work_scopes':scopes}

tools/answer_evaluation/verified_rag.py

@@ -13,7 +13,8 @@ from .rag_evidence import descriptive_text, rag_evidence_context, quote_sections
 from .answer_coverage import answer_coverage, coverage_notices
 from .presentation import (content_lines, fact_sentences, no_answer_text, work_subject,
                            clean_answer, evidence_subject, comparison_table)
-from .content_selection import facet_lines, evidence_units, missing_facets, fit_candidates, has_qualification
+from .content_selection import (facet_lines, evidence_units, missing_facets, missing_work_facets,
+                                matches_scope, fit_candidates, has_qualification)
 from .evidence_selection import (resolve_selection, EvidenceSelectionError,
                                 missing_required_evidence, overview_units)
 
@@ -294,10 +295,10 @@ def rag_answer_issues(answer: dict, context: dict) -> list[str]:
                     if kind not in kinds:
                         issues.append('missing_' + kind + '_evidence')
     if requirements.get('facets'):
-        available={(c['person'],facet) for c in context.get('content_candidates',[]) for facet in c['facets']}
+        available=context.get('content_candidates',[])
         if answer['status']=='ok':
-            for person,facet in missing_facets(answer,context):
-                if (person,facet) in available:
+            for person,label,facet in missing_work_facets(answer,context):
+                if any(matches_scope(c,person,label) and facet in c['facets'] for c in available):
                     issues.append('missing_'+('progress' if facet=='results' else facet)+'_evidence')
         elif answer['status']=='no_answer' and available:
             issues.append('rejected_supported_content_comparison')
@@ -430,17 +431,18 @@ def render_rag_answer(answer: dict, context: dict) -> str:
                 quote = selection['evidence']
                 passage = next((p for p in context.get('content_passages', [])
                     if quote_matches_passage(quote,p)), {})
-                identity = (passage.get('person'), passage.get('work_type'), passage.get('year'))
+                identity = (passage.get('person'), passage.get('work_type'), passage.get('year'),passage.get('work_label'))
                 groups.setdefault(identity, []).append(selection['text'])
             table = None
             if style == 'overview' and len(groups)>1 and re.search(r'\bporovnaj\w*\b',normalized(context.get('question',''))):
                 from .presentation import goal_text
-                table=comparison_table(['Oblasť',*(evidence_subject(person,context) for person,_,_ in groups)],
+                table=comparison_table(['Oblasť',*(person+' — '+label if req.get('separate_works') and label else
+                    evidence_subject(person,context) for person,_,_,label in groups)],
                     [('Zameranie podľa podkladov',['\n'.join(goal_text(text)[0] for text in units)
                                                    for units in groups.values()])])
             if table is not None:
                 lines.extend(table)
-            for (person, kind, _year), selections in ([] if table is not None else groups.items()):
+            for (person, kind, _year,label), selections in ([] if table is not None else groups.items()):
                 if style == 'overview':
                     units = selections
                 else:
@@ -451,7 +453,9 @@ def render_rag_answer(answer: dict, context: dict) -> str:
                         units.extend(block.strip() for block in re.split(
                             r'(?=^[ \t]*(?:\d+[.)]|[-+*])\s+)', text, flags=re.M)
                             if block.strip())
-                lines.extend(content_lines(units, person, kind, context.get('question', '')))
+                rendered=content_lines(units, person, kind, context.get('question', ''))
+                if req.get('separate_works') and label:rendered=['**'+person+' — '+' '.join(label.split())+'**','',*rendered[1:]]
+                lines.extend(rendered)
         else:
             sources = {row['source_id']: row for row in context['source_blocks']}
             lines += ['Zo zdroja ' + str(sources[quote['source_id']].get('title') or quote['source_id']) +
@@ -527,6 +531,9 @@ def generate_verified_rag(question: str, payload: dict, complete) -> dict:
             + ('claims=[] a source_urls=[]; citácie dosadí aplikácia podľa IDs.'
                if context['requirements']['response_mode']=='quotes' else
                'Pri mixed vyplň iba výslovne požadované claims a cituj aj ich zdroje.'))
+        if context['requirements'].get('separate_works'):
+            selection_policy+=(' Rovnaká osoba, typ a rok nezlučujú rôzne work_label. '
+                'Vyber dôkazy pre každú dostupnú požadovanú časť každej práce zvlášť; chýbajúce časti označí aplikácia.')
         facets=context['requirements'].get('facets',[])
         if facets:
             support={f'osoba_{i}':[f for f in facets if any(row.get('person')==person and f in row.get('facets',[])

tools/answers/answer_delivery.py

@@ -33,6 +33,11 @@ def deliver_answer(question: str, *, engine: str = 'rag', limit: int = 5,
                 'accepted_for_delivery': False, 'answer': 'Agent práve spracúva iné odpovede. Skúste to o chvíľu.'}
     try:
         model = complete or complete_with_configured_model
+        from tools.answer_evaluation.question_intent import unresolved_followup
+        if unresolved_followup(question):
+            return {'status':'ambiguous','reason':'missing_followup_context','accepted_for_delivery':True,
+                'answer':'Uveď osobu a presné označenia prác alebo úplnú otázku. Samotné „obe“ bez predchádzajúcich možností neviem spoľahlivo vyhľadať.',
+                'claims':[],'source_urls':[],'engine':engine,'index_version':None,'complete':False,'truncated':False,'truncation_reasons':[]}
         unsupported=unsupported_constraint(question)
         if unsupported:
             return {'status':'ambiguous','reason':'unsupported_constraint','accepted_for_delivery':True,
@@ -51,7 +56,8 @@ def deliver_answer(question: str, *, engine: str = 'rag', limit: int = 5,
             context = retrieved
         elif engine == 'graphrag':
             from tools.answer_evaluation.question_intent import graph_needs_text
-            if graph_needs_text(question):
+            from tools.retrieval.work_selector import parse_work_selector
+            if graph_needs_text(question) or parse_work_selector(question).specific:
                 return {'status':'ambiguous','reason':'text_evidence_required','accepted_for_delivery':True,
                     'answer':'Táto otázka vyžaduje textové podklady o zadaní, priebehu alebo výsledkoch práce. '
                              'Použi /rag s rovnakou otázkou; graf samotný tieto výňatky neposkytuje.',

tools/graphrag/evaluation/reproducibility.py

@@ -48,6 +48,7 @@ def content_fingerprints(questions: Path, root: Path = ROOT) -> dict[str, Any]:
         'tools/answer_evaluation/rag_evidence.py', 'tools/answer_evaluation/verified_rag.py', 'tools/rag/llm_context.py',
         'tools/answer_evaluation/question_intent.py', 'tools/answer_evaluation/content_selection.py',
         'tools/answer_evaluation/evidence_selection.py',
+        'tools/retrieval/work_selector.py',
         'tools/answer_evaluation/rag_preparation.py', 'tools/answer_evaluation/answer_coverage.py',
         'tools/answer_evaluation/graph_answer_prompt.txt',
         'tools/rag/evaluation/rag_metrics.py', 'tools/rag/evaluation/rag_runner.py'])

tools/rag/llm_context.py

@@ -12,7 +12,7 @@ from tools.retrieval.text_budget import split_to_fit
 SOURCE_FIELDS = ('source_id', 'title', 'author', 'document_path', 'source_url', 'published',
                  'categories', 'tags', 'section')
 FIELDS = ('status', 'reason', 'query', 'engine', 'strategies', 'instructions', 'answer_format',
-          'complete', 'truncated', 'truncation_reasons', 'index_version', 'source_count', 'clarification', 'named_subjects')
+          'complete', 'truncated', 'truncation_reasons', 'index_version', 'source_count', 'clarification', 'named_subjects', 'work_scopes')
 
 
 def compact_rag_payload(data: dict, *, max_tokens: int | None = None,

tools/retrieval/question_constraints.py

@@ -1,17 +1,18 @@
 """Fail closed for recognized query operators without an implemented meaning."""
 import re
-import unicodedata
 
 
 def requested_years(question: str) -> list[int]:
     """An unquoted four-digit year remains a condition without 'v roku'."""
-    text=re.sub(r'[„“"«][^„“”"»]+[“”"»]', ' ', question)
-    return list(dict.fromkeys(int(value) for value in re.findall(r'\b\d{4}\b',text)))
+    from .work_selector import selector_years
+    return selector_years(question)
 
 
 def unsupported_constraint(question: str) -> str | None:
-    text = ''.join(c for c in unicodedata.normalize('NFKD', question).casefold()
-                   if not unicodedata.combining(c))
+    from .work_selector import parse_work_selector
+    selection=parse_work_selector(question)
+    if selection.unsupported_negation:return 'exclusion'
+    text=selection.positive_text
     # Do not treat words inside quoted academic titles as query operators.
     text = re.sub(r'[„“"«][^„“”"»]+[“”"»]', ' ', text)
     academic = re.search(r'\b(?:prac\w*|projekt\w*)\b',text)

tools/retrieval/work_selector.py

@@ -0,0 +1,79 @@
+"""Source-heading selectors; negated project numbers never become positive filters."""
+from dataclasses import dataclass
+import re
+import unicodedata
+
+
+def normalize(text):
+    return ''.join(c for c in unicodedata.normalize('NFKD',text).casefold() if not unicodedata.combining(c))
+
+
+def label_key(text):
+    return ' '.join(re.sub(r'[^\w]+',' ',normalize(text)).split())
+
+
+QUOTED=re.compile(r'[„“"«]([^„“”"»]+)[“”"»]')
+HEADING=re.compile(r'(?:diplomovy|bakalarsky|timovy|vyskumny|vedecky) projekt(?: [1-9]\d?)? [12]\d{3}|'
+                   r'(?:diplomova|bakalarska|dizertacna) praca [12]\d{3}')
+NUMBER=re.compile(r'\bprojekt\w*\s+([1-9]\d?)(?!\d)\b')
+NEGATIVE=re.compile(r'\b(?:nie|okrem|bez|s vynimkou)\s+(?:(?:diplomov|bakalarsk|timov|vyskumn|vedeck)\w*\s+)?$')
+
+
+@dataclass(frozen=True)
+class WorkSelector:
+    labels: tuple=()
+    excluded_labels: tuple=()
+    numbers: tuple=()
+    excluded_numbers: tuple=()
+    unnumbered: bool=False
+    multiple: bool=False
+    positive_text: str=''
+    unsupported_negation: bool=False
+
+    @property
+    def specific(self):
+        return bool(self.labels or self.excluded_labels or self.numbers or self.excluded_numbers or self.unnumbered)
+
+    def matches(self,label):
+        key=label_key(label);match=NUMBER.search(key);number=int(match[1]) if match else None
+        return ((not self.labels or key in self.labels) and key not in self.excluded_labels and
+                (not self.numbers or number in self.numbers) and number not in self.excluded_numbers and
+                (not self.unnumbered or number is None))
+
+
+def parse_work_selector(question):
+    text=normalize(question);positive=[];negative=[];excluded_spans=[]
+    for match in QUOTED.finditer(text):
+        key=label_key(match[1])
+        if not HEADING.fullmatch(key):continue
+        neg=NEGATIVE.search(text[:match.start()])
+        if neg:
+            negative.append(key);excluded_spans.append((neg.start(),match.end()))
+        else:positive.append(key)
+    numbers=[];excluded=[];unsupported=False
+    for match in NUMBER.finditer(text):
+        if any(quote.start()<=match.start()<quote.end() for quote in QUOTED.finditer(text)):continue
+        neg=NEGATIVE.search(text[:match.start()])
+        if neg:
+            excluded.append(int(match[1]));excluded_spans.append((neg.start(),match.end()))
+            # Year-qualified exclusions require the exact quoted heading.
+            if re.match(r'\s+(?:(?:v|z) roku\s+)?\d{4}\b',text[match.end():]):unsupported=True
+        else:numbers.append(int(match[1]))
+    cleaned=text
+    for start,end in sorted(excluded_spans,reverse=True):cleaned=cleaned[:start]+' '*(end-start)+cleaned[end:]
+    if re.search(r'\bnie\s+(?:(?:diplomov|bakalarsk|timov|vyskumn|vedeck)\w*\s+)?(?:projekt\w*|prac\w*|(?:(?:v|z)\s+)?(?:rok\w*\s+)?\d{4})\b',cleaned):
+        unsupported=True
+    multiple=bool(re.search(r'\b(?:oba|obe|oboch|obidv\w*|vsetk\w*)\s+'
+        r'(?:(?:jeho|tieto|uveden\w*|diplomov\w*|bakalarsk\w*|timov\w*|vyskumn\w*|vedeck\w*)\s+)*'
+        r'(?:projekt\w*|prac\w*)\b',text)) or len(set(positive))>1 or len(set(numbers))>1
+    return WorkSelector(tuple(dict.fromkeys(positive)),tuple(dict.fromkeys(negative)),
+        tuple(dict.fromkeys(numbers)),tuple(dict.fromkeys(excluded)),
+        bool(re.search(r'\bnecislo\w*\b|\bprojekt\w*\s+bez cisla\b',text)),multiple,cleaned,unsupported)
+
+
+def selector_years(question):
+    selector=parse_work_selector(question)
+    text=QUOTED.sub(' ',selector.positive_text)
+    years=[int(v) for v in re.findall(r'\b\d{4}\b',text)]
+    years.extend(int(label.split()[-1]) for label in selector.labels)
+    return list(dict.fromkeys(years))