Add real-life reference meeting sample

- add reproducible real-world meeting sample
- store meeting audio using Git LFS
- include raw and cleaned Whisper transcripts
- add manifest with SHA-256 checksums
- document sample usage and confidentiality
- intentionally exclude generated pipeline artifacts

samples/real_live/project_process_meeting/README.md

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+# Project Process Meeting Real-Life Sample
+
+## Purpose
+
+This directory preserves the complete input data for the current real meeting
+experiment so the Meeting Lab pipeline can be reproduced on another computer.
+
+This is a deliberately selected reference sample, not ordinary generated
+runtime data.
+
+## Confidentiality
+
+This sample contains real meeting data. Keep the repository private. Do not
+copy, publish or redistribute these files outside the intended private
+development context.
+
+Avoid exposing unnecessary personal details in derived documentation, reports
+or screenshots.
+
+## Language
+
+The meeting language is German.
+
+## Contents
+
+Original input files:
+
+- `audio/meeting_speech.wav`: source meeting audio.
+- `transcript/meeting_speech.json`: raw Whisper transcript JSON.
+- `transcript/meeting_speech_cleaned.json`: cleaned Whisper transcript JSON.
+
+Reference material:
+
+- `reference/human_reference_protocol.md`: not currently included. No exact
+  existing human-written protocol file was found in the repository workspace.
+
+Generated outputs are intentionally excluded. This sample does not include
+generated chunks, normalized chunks, segmentation outputs, extraction JSON
+files, consolidated outputs, generated protocols, raw model responses or
+temporary files.
+
+## Intended Pipeline Use
+
+This sample may be used to reproduce and test:
+
+- audio/transcription workflow setup
+- Whisper JSON cleanup behavior
+- transcript chunking
+- normalization
+- segmentation experiments
+- extraction experiments
+- canonicalization and future consolidation experiments
+
+Generated artifacts should be written to normal experiment or benchmark output
+locations, not back into this input sample directory.
+
+## Git LFS
+
+The WAV audio is intentionally versioned through Git LFS using the scoped
+repository rule for `samples/real_live/**/*.wav`.
+
+After cloning the repository, retrieve LFS files with:
+
+```text
+git lfs pull
+```
+

samples/real_live/project_process_meeting/manifest.json

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+{
+  "sample_id": "project_process_meeting",
+  "title": "Project Process Meeting",
+  "language": "de",
+  "audio_file": "audio/meeting_speech.wav",
+  "raw_transcript_file": "transcript/meeting_speech.json",
+  "cleaned_transcript_file": "transcript/meeting_speech_cleaned.json",
+  "reference_protocol_file": null,
+  "audio_format": "WAV PCM 16-bit mono 16000 Hz",
+  "transcript_format": "Whisper JSON",
+  "created_from_existing_project_data": true,
+  "notes": [
+    "Deliberately versioned real-life reference sample for reproducible Meeting Lab testing.",
+    "Contains real meeting data; repository must remain private.",
+    "Generated chunks, normalized chunks, segmentation outputs, extraction JSON, consolidated outputs and generated protocols are intentionally excluded.",
+    "No exact human-written reference protocol file was found in the repository workspace, so reference_protocol_file is null."
+  ],
+  "checksums": {
+    "audio/meeting_speech.wav": {
+      "sha256": "d763b8886f089c49ed3bcc2813dfb3a78ae2fd03eee6d843bbee1c52686bf380",
+      "bytes": 179592270
+    },
+    "transcript/meeting_speech.json": {
+      "sha256": "55ea11571ce43ad299b00362bd1d9b92555aa9d1865779bf9b47ee89138e92ef",
+      "bytes": 542337
+    },
+    "transcript/meeting_speech_cleaned.json": {
+      "sha256": "22e8616a946a3f46f66ea56e8d80174b44f49a1c14dc297ea0405dee0afbdd3c",
+      "bytes": 800585
+    }
+  }
+}
+