feat: type hints green [bracketed] notation, workspace cleanup, unique naming

- Type inference hints now show value-first with bracketed type in comment
  green: "0x7ff718570000 [ptr64]", "6, 16 [int32_t×2]"
- Raise hint threshold to strong-only (score >= 75%)
- Remove Bool inference, widen Int16 range to ±16384
- Workspace: remove dead WorkspaceProxy, fix null deref, debounce search,
  cache icons, add pinning support
- Unique naming: UnnamedClass0/UnnamedEnum1 with global counter
- Footer buttons: +10h +100h +1000h replacing +1024
- MCP: project lifecycle API, snapshot provider fix

src/scannerpanel.cpp

@@ -702,7 +702,7 @@ void ScannerPanel::onCellEdited(int row, int col) {
             m_statusLabel->setText(QStringLiteral("Wrote %1 byte%2 to 0x%3")
                 .arg(bytes.size())
                 .arg(bytes.size() == 1 ? "" : "s")
-                .arg(addr, 0, 16, QLatin1Char('0')).toUpper());
+                .arg(QString::number(addr, 16).toUpper()));
             // Re-read and update cache
             m_resultTable->blockSignals(true);
             int readSize = (m_lastScanMode == 1) ? valueSize() : 16;