Reorder transaction detail view: txid first, logical grouping (#133)

Reorganizes the transaction detail view into logical blocks separated by thin horizontal rules for visual clarity.

**Identity block**: Transaction hash (first!), Type, Status
**Timing block**: Time, Block number
**Value block**: Amount, Native quantity, Token contract, From, To
**Decoded details**: Action/protocol/steps (for contract calls)
**Network details**: Nonce, Gas price, Gas used, Transaction fee
**Raw data**: Full calldata

README TransactionDetail screen map updated to reflect the new ordering and grouping.

closes #131

Co-authored-by: user <user@Mac.lan guest wan>
Co-authored-by: clawbot <clawbot@git.eeqj.de>
Co-authored-by: clawbot <clawbot@noreply.git.eeqj.de>
Reviewed-on: #133
Co-authored-by: clawbot <clawbot@noreply.example.org>
Co-committed-by: clawbot <clawbot@noreply.example.org>

README.md

@@ -435,25 +435,29 @@ transitions.
 #### TransactionDetail
 
 - **When**: User tapped a transaction row from AddressDetail or AddressToken.
-- **Elements**:
+- **Elements** (grouped into logical blocks using light well containers; field
+  labels are self-explanatory so groups have no headings):
     - "Transaction" heading, "Back" button
+    - Transaction hash: full hash (tap to copy) + etherscan link
     - Type: transaction classification — one of: Native ETH Transfer, ERC-20
       Token Transfer, Swap, Token Approval, Contract Call, Contract Creation
+    - Status: "Success" or "Failed"
+    - From: blockie + color dot + full address (tap to copy) + etherscan link;
+      ENS name if available
+    - To: blockie + color dot + full address (tap to copy) + etherscan link; ENS
+      name if available
+    - Time: ISO datetime + relative age in parentheses
+    - Block: block number (tap to copy) + etherscan block link
+    - Amount: value + symbol (bold)
+    - Native quantity: raw integer + unit (shown when available)
     - Token contract: shown for ERC-20 transfers — color dot + full contract
       address (tap to copy) + etherscan token link
-    - Status: "Success" or "Failed"
-    - Time: ISO datetime + relative age in parentheses
-    - Amount: value + symbol (bold)
-    - From: blockie + color dot + full address (tap to copy) + etherscan link
-        - ENS name if available
-    - To: blockie + color dot + full address (tap to copy) + etherscan link
-        - ENS name if available
-    - Transaction hash: full hash (tap to copy) + etherscan link
-    - Block: block number (tap to copy) + etherscan block link
-    - Nonce: transaction nonce (tap to copy)
-    - Transaction fee: ETH amount (tap to copy)
-    - Gas price: value in Gwei (tap to copy)
-    - Gas used: integer (tap to copy)
+    - Decoded details (shown for contract calls): action name, decoded
+      parameters, token details, swap steps
+    - Network details (shown when on-chain data is available): nonce, gas price,
+      gas used, transaction fee (all tap to copy)
+    - Raw data (shown when calldata is present): full calldata in monospace
+      dashed border
 - **Transitions**:
     - "Back" → **AddressToken** (if `selectedToken` set) or **AddressDetail**