safety, no data imported into sqlite yet

migration/sql/ble_migration_schema.sql

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+-- 20260516 ChatGPT
+-- $Header$
+--
+-- Example:
+--   cd /usr/local/src/ble-reticulum/migration
+--   sqlite3 ble_migration.sqlite ".read sql/ble_migration_schema.sql"
+-- Verify
+--   sqlite3 ble_migration.sqlite ".tables"
+--   sqlite3 ble_migration.sqlite ".schema symbols"
+--
+-- Purpose:
+--   Track symbol-by-symbol migration status for BLE Reticulum protocol extraction.
+
+CREATE TABLE IF NOT EXISTS symbols (
+    symbol_id       INTEGER PRIMARY KEY AUTOINCREMENT,
+    source_file     TEXT NOT NULL,
+    symbol_name     TEXT NOT NULL,
+    symbol_type     TEXT,
+    class_name      TEXT,
+    line_number     INTEGER,
+    tag             TEXT DEFAULT 'UNKNOWN',
+    phase           TEXT DEFAULT '0_inventory',
+    status          TEXT DEFAULT 'DISCOVERED',
+    cpp_candidate   INTEGER DEFAULT 0,
+    confidence      TEXT DEFAULT 'unknown',
+    rationale       TEXT,
+    callers         TEXT,
+    callees         TEXT,
+    notes           TEXT,
+    first_seen_at   TEXT DEFAULT CURRENT_TIMESTAMP,
+    updated_at      TEXT DEFAULT CURRENT_TIMESTAMP,
+
+    UNIQUE(source_file, class_name, symbol_name, line_number)
+);
+
+CREATE TABLE IF NOT EXISTS reviews (
+    review_id       INTEGER PRIMARY KEY AUTOINCREMENT,
+    symbol_id       INTEGER NOT NULL REFERENCES symbols(symbol_id),
+    reviewed_at     TEXT DEFAULT CURRENT_TIMESTAMP,
+    reviewer        TEXT,
+    old_tag         TEXT,
+    new_tag         TEXT,
+    old_status      TEXT,
+    new_status      TEXT,
+    note            TEXT
+);
+
+CREATE INDEX IF NOT EXISTS symbols_tag_idx
+    ON symbols(tag);
+
+CREATE INDEX IF NOT EXISTS symbols_status_idx
+    ON symbols(status);
+
+CREATE INDEX IF NOT EXISTS symbols_phase_idx
+    ON symbols(phase);
+
+CREATE INDEX IF NOT EXISTS symbols_cpp_candidate_idx
+    ON symbols(cpp_candidate);