Stabilize Meeting Lab pipeline for RC1 evaluation

This commit significantly improves the robustness and determinism of the Meeting Lab processing pipeline and establishes the first Release Candidate baseline for end-to-end evaluation.

Highlights

- BUG-009
  - Implement deterministic responsible-party validation
  - Normalize participant aliases using Meeting Context
  - Reject invalid responsible values (dates, locations, technical terms, projects, products, unknown entities)
  - Record structured responsibility validation metadata
  - Add focused regression tests

- BUG-010
  - Implement adaptive num_predict estimation for Semantic Consolidator
  - Eliminate JSON truncation caused by fixed output limits
  - Add deterministic source coverage repair
  - Preserve strict post-repair validation
  - Add regression tests

- BUG-011
  - Implement Working Protocol V2 renderer contract enforcement
  - Preserve raw renderer responses
  - Reject invalid protocol output instead of accepting malformed documents
  - Add deterministic cleanup for harmless formatting deviations
  - Add focused renderer regression tests

- Meeting Context
  - Validate Meeting Context V1
  - Integrate authoritative participant alias normalization

- Documentation
  - Update architecture documentation
  - Update output documentation
  - Update regression bug tracker

The pipeline now fails safely instead of silently accepting invalid intermediate or final artifacts.

Remaining work focuses primarily on extraction quality and semantic classification (decisions, action items, protocol faithfulness), rather than pipeline robustness.

samples/real_live/progeo_meeting/meeting_context.yaml

@@ -2,29 +2,124 @@ schema_version: "1"
 
 meeting:
   meeting_id: "progeo-meeting"
-  title: "Progeo meeting"
+  title: "Progeo Meeting"
   language: "de"
-  date: null
-  objective: ""
-  notes: "Meeting Context scaffold for Real-Life Reference Meeting #2. Participant and entity metadata require manual completion."
+  date: 2026-07-27
+  objective: >-
+    Ergebnisbericht zur abgeschlossenen Versuchsproduktion eines Geogitters
+    aus recyceltem Polypropylen und Abstimmung weiterer Großversuche.
+  notes: >-
+    Real-Life Reference Meeting #2. Beteiligte externe Organisationen:
+    Fraunhofer, MAS, Universität Leeds, FH Münster, Kiwa und Kockmann.
 
-participants: []
+participants:
+  - participant_id: "martin"
+    display_name: "Martin"
+    aliases: [Martin Tazl, Herr Tazl]
+    role: "Entwicklungsleiter Naue"
+    department: "naue"
+    attendance_status: "present"
+    notes: null
 
-mentioned_people: []
+  - participant_id: "james"
+    display_name: "James"
+    aliases: [James Nachtigall, Herr Nachtigall]
+    role: "Entwicklungsingenieur"
+    department: "naue"
+    attendance_status: "present"
+    notes: null
+
+  - participant_id: "david"
+    display_name: "David"
+    aliases: []
+    role: "Entwicklungsingenieur"
+    department: "naue"
+    attendance_status: "present"
+    notes: null
+
+  - participant_id: "gotthard"
+    display_name: "Gotthard"
+    aliases: [Gothard, Gotthardt, Gothardt, Herr Walter]
+    role: "Projektleiter"
+    department: "fh-muenster"
+    attendance_status: "present"
+    notes: null
+
+  - participant_id: "tim"
+    display_name: "Tim"
+    aliases: [Timm, Tim Schulte-Uebbing, Herr Schulte-Uebbing]
+    role: "PhD"
+    department: "fh-muenster"
+    attendance_status: "present"
+    notes: null
+
+  - participant_id: "antonius"
+    display_name: "Antonius"
+    aliases: []
+    role: "PhD"
+    department: "fh-muenster"
+    attendance_status: "present"
+    notes: null
+
+  - participant_id: "marleen"
+    display_name: "Marleen"
+    aliases: [Marlene, Frau Wever, Marleen Wever]
+    role: "Entwicklungsingenieurin"
+    department: "huesker"
+    attendance_status: "present"
+    notes: null
+
+mentioned_people:
+  - person_id: "henning"
+    display_name: "Henning"
+    aliases: []
+    role: null
+    department: null
+    attendance_status: "not_present"
+    notes: null
 
 organization:
   name: null
 
-  departments: []
+  departments:
+    - id: "naue"
+      name: "Naue"
+      aliases: [Naue GmbH & Co. KG]
 
-  abbreviations: {}
+    - id: "huesker"
+      name: "Huesker"
+      aliases: [HÜSKER]
+
+    - id: "fh-muenster"
+      name: "FH Münster"
+      aliases: [Fachhochschule Münster]
+
+  abbreviations:
+    RC: "Recycling"
+    PP: "Polypropylen"
+    PET: "Polyethylenterephthalat"
+    MFI: "Melt Flow Index"
+    IV: "intrinsische Viskosität"
+    SSP: "Solid-State Polymerization"
 
 known_entities:
-  projects: []
-  products: []
+  projects: [Progeo]
+  products: [Secugrid, Combigrid]
   systems: []
-  locations: []
-  technical_terms: []
+  locations: [Stettin]
+  technical_terms:
+    - Rezyklat
+    - Virgin-Material
+    - Glührückstand
+    - Verstrecken
+    - Streckwerk
+    - Bruchspannung
+    - Zugfestigkeit
+    - Dehnung
+    - Trommelsieb
+    - chemisches Recycling
+    - mechanisches Recycling
+    - Nachkondensation
 
 context_rules:
   participant_list_is_authoritative: true
@@ -32,4 +127,4 @@ context_rules:
   do_not_infer_departments: true
   do_not_infer_responsibilities: true
   do_not_infer_attendance: true
-  mentioned_people_are_not_participants: true
+  mentioned_people_are_not_participants: true