Add Vanheede real-world regression case

samples/real_live/vanheede_naue_recycled_hdpe_2026-09-14/context/meeting_context.yaml

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+schema_version: '1'
+meeting:
+  meeting_id: vanheede-and-naue-recycling-and-circular-economy
+  title: Vanheede and Naue, Recycling and Circular Economy
+  language: en
+  date: '2026-09-14'
+  objective: ''
+  notes: Use of recycled HDPE from Post Consumer Sources in Gemomembrane Production,
+    especially for Naue Carbofol.
+participants:
+- participant_id: participant-0c5377fb
+  display_name: Christian Psiorz
+  aliases: []
+  role: Sales Direcctor V1
+  department: naue
+  attendance_status: present
+  notes: null
+- participant_id: participant-8c7d5a9d
+  display_name: Martin Tazl
+  aliases: []
+  role: Director R&D / Technic
+  department: naue
+  attendance_status: present
+  notes: null
+- participant_id: participant-dddd3ddf
+  display_name: Dries Nollet
+  aliases: []
+  role: Sales Person
+  department: vanheede
+  attendance_status: present
+  notes: null
+- participant_id: participant-c9280bb9
+  display_name: Jorik Muylle
+  aliases: []
+  role: Technical
+  department: vanheede
+  attendance_status: present
+  notes: null
+speaker_mappings:
+  SPEAKER_00: participant-c9280bb9
+  SPEAKER_01: participant-8c7d5a9d
+  SPEAKER_02: participant-0c5377fb
+  SPEAKER_03: participant-dddd3ddf
+mentioned_people: []
+organization:
+  name: null
+  departments:
+  - id: naue
+    name: Naue
+    aliases: []
+  - id: vanheede
+    name: Vanheede
+    aliases: []
+  abbreviations: {}
+known_entities:
+  Authoritative terminology:
+  - 'Bentofix (aliases: Bento Fix)'
+  - 'Carbofol (aliases: Carbofool, Carbovol, Karbofol)'
+  - 'Diekmeier (aliases: Diekmeyer, Dikmeier, Dikmeyer)'
+  - 'GM13 (aliases: GM 13, GM-13)'
+  - 'GM17 (aliases: GM 17, GM-17)'
+  - 'GM42 (aliases: GM 42, GM-42)'
+  - 'Kockmann (aliases: Cockmann, Kogmann)'
+  - 'Luminy (aliases: Lumini)'
+  - PBAT
+  - 'Secugrid (aliases: Sikirgut)'
+  - 'Secugrid HS (aliases: Sikirgut Heistlöse, Sikirgut-Heistlöse, Sikirgut-Heißlöse)'
+  - 'Secumat (aliases: Sekumat)'
+  - Secutex
+context_rules:
+  participant_list_is_authoritative: true
+  do_not_infer_roles: true
+  do_not_infer_departments: true
+  do_not_infer_responsibilities: true
+  mentioned_people_are_not_participants: true
+  glossary_canonical_spelling: Use canonical glossary spellings only when the meeting
+    clearly refers to those terms; do not invent matches or replace unrelated words.
+  glossary_core_terms: Preserve surrounding context and use canonical core terms inside
+    compounds where appropriate.