Update README Screen Map with all views and state transitions

Complete rewrite of the Screen Map section documenting all 17 views:
Welcome, Home, AddWallet, ImportKey, AddressDetail, AddressToken,
Send, ConfirmTx, WaitTx, SuccessTx, ErrorTx, Receive,
TransactionDetail, AddToken, Settings, SiteApproval, TxApproval.

Each view documents its elements (with display details like blockies,
color dots, etherscan links, formatting) and all state transitions
with their destination screens and conditions.

README.md

@@ -187,140 +187,270 @@ transitions.
 - **When**: No wallets exist yet.
 - **Elements**: "AutistMask" heading, brief intro text, "Add wallet" button.
 - **Transitions**:
-    - "Add wallet" → pushes **AddWallet**
+    - "Add wallet" → **AddWallet**
 
 #### Home
 
 - **When**: At least one wallet exists. This is the root screen.
 - **Elements**:
-    - Header: "AutistMask", Settings button
-    - Total ETH balance across all addresses (large text)
-    - Total USD value (small text below ETH total, cached 5 min)
-    - List of wallets, each showing:
-        - Wallet name (editable — tap to rename)
-        - "+" button (HD wallets only) to derive next address
-        - List of addresses under that wallet:
-            - Address name (editable — tap to rename, default "Address N")
-            - Full address (untruncated)
-            - ETH balance + USD value (small text)
-    - "+ Add wallet" button at the bottom
+    - Header: "AutistMask", Settings gear button
+    - Active address ETH balance (large) + USD value (inline parentheses)
+    - Total USD value across all tokens (small text)
+    - Active address (color dot, full address, etherscan link, tap to copy)
+    - Send / Receive quick-action buttons
+    - ETH/USD price display
+    - Wallet list: each wallet shows name (tap to rename), "+" button (HD only),
+      and its addresses with color dots, balances, and `[info]` buttons
+    - Recent transactions across all addresses (merged, deduplicated, filtered)
+    - "Add additional wallet..." link at bottom
 - **Transitions**:
-    - Tap address → pushes **AddressDetail**
-    - "+" on wallet → derives address inline (no screen change)
-    - "+ Add wallet" → pushes **AddWallet**
-    - Settings → pushes **Settings**
+    - Tap address row → sets active address (no screen change)
+    - `[info]` on address → **AddressDetail**
+    - "Send" → **Send** (selects active address)
+    - "Receive" → **Receive** (shows active address QR)
+    - "+" on wallet → derives next address inline
+    - "Add additional wallet..." → **AddWallet**
+    - Settings gear → **Settings** (toggles; tap again to return)
+    - Tap home tx row → **AddressDetail** (for the address involved)
 
 #### AddWallet
 
-- **When**: User wants to add a new wallet (from Home or Welcome).
+- **When**: User wants to add a new wallet (from Home, Welcome, or Settings).
 - **Elements**:
-    - "Add Wallet" heading
+    - "Add Wallet" heading, "Back" button
     - Instruction text
-    - Die button `[die]` (generates random recovery phrase, can be clicked
-      repeatedly)
-    - Recovery phrase textarea (empty by default, or filled by die)
+    - Die button `[die]` (generates random recovery phrase)
+    - Recovery phrase textarea
     - Backup warning box (shown after die is clicked)
-    - "Add" button, "Back" button
-    - "Have a private key instead?" link → pushes **ImportKey**
+    - Password + confirm password inputs
+    - "Add" button
+    - "Have a private key instead?" link
 - **Transitions**:
-    - "Add" (valid phrase) → pops to **Home**
-    - "Back" → pops to previous (Home or Welcome)
-    - "Have a private key instead?" → pushes **ImportKey**
+    - "Add" (valid phrase + password) → **Home**
+    - "Back" → previous screen (Home or Welcome)
+    - "Have a private key instead?" → **ImportKey**
 
 #### ImportKey
 
 - **When**: User wants to import a single private key.
 - **Elements**:
-    - "Import Private Key" heading
+    - "Import Private Key" heading, "Back" button
     - Instruction text
     - Private key input (password-masked)
-    - "Import" button, "Back" button
+    - Password + confirm password inputs
+    - "Import" button
 - **Transitions**:
-    - "Import" (valid key) → pops to **Home**
-    - "Back" → pops to previous
+    - "Import" (valid key + password) → **Home**
+    - "Back" → **AddWallet**
 
 #### AddressDetail
 
-- **When**: User tapped an address from Home.
+- **When**: User tapped `[info]` on an address from Home.
 - **Elements**:
-    - Header: wallet name, "Back" button
-    - Address name (editable — tap to rename)
-    - ENS name (if resolved, shown above address)
-    - Full address (tap to copy, "Copied!" feedback)
-    - ETH balance (large) + USD value (small)
-    - "Send" button, "Receive" button
-    - Token list with balances
-    - "+ Add" token button
+    - "Back" button
+    - Blockie identicon (48px, centered)
+    - Title: "Wallet Name — Address N"
+    - ENS name (if resolved, bold with color dot)
+    - Full address (color dot, etherscan link, tap to copy)
+    - USD total for address
+    - Balance list: ETH + tracked ERC-20 tokens (4 decimal places, USD inline).
+      Each balance row is clickable → **AddressToken**
+    - Send / Receive / + Token buttons
+    - Transaction list (with ENS resolution for counterparties)
 - **Transitions**:
-    - "Send" → pushes **Send**
-    - "Receive" → pushes **Receive**
-    - "+ Add" → pushes **AddToken**
-    - "Back" → pops to **Home**
+    - Tap balance row → **AddressToken** (for that token)
+    - "Send" → **Send**
+    - "Receive" → **Receive**
+    - "+ Token" → **AddToken**
+    - Tap transaction row → **TransactionDetail**
+    - "Back" → **Home**
+
+#### AddressToken
+
+- **When**: User clicked a specific token balance on AddressDetail.
+- **Elements**:
+    - "Back" button
+    - Blockie identicon (48px, centered)
+    - Title: "Wallet Name — Address N — TOKEN"
+    - Full address (color dot, etherscan link, tap to copy)
+    - USD total for this token
+    - Single token balance line (4 decimal places)
+    - Send / Receive buttons
+    - Token-filtered transaction list (only this token's transfers)
+- **Transitions**:
+    - "Send" → **Send** (token pre-selected and locked in dropdown)
+    - "Receive" → **Receive** (ERC-20 warning shown for non-ETH tokens)
+    - Tap transaction row → **TransactionDetail**
+    - "Back" → **AddressDetail**
 
 #### Send
 
 - **When**: User wants to send ETH or a token from this address.
 - **Elements**:
-    - "Send" heading
-    - Token selector (ETH + any added tokens)
-    - "To" input (accepts address or ENS name, resolves before sending)
-    - Amount input
-    - Fee estimate (shown after entering amount)
-    - "Send" button, "Cancel" button
-    - Status area (resolving ENS, confirming, errors)
+    - "Send" heading, "Back" button
+    - From: address with color dot + etherscan link
+    - What to send: token dropdown (or static display with contract address when
+      locked from AddressToken)
+    - To: address or ENS name input
+    - Amount input with current balance display
+    - "Review" button
 - **Transitions**:
-    - "Send" (valid) → prompts for password (to decrypt private key), submits
-      transaction, shows result, stays on screen
-    - "Cancel" → pops to **AddressDetail**
+    - "Review" (valid inputs, ENS resolved) → **ConfirmTx**
+    - "Back" → **AddressToken** (if came from token view) or **AddressDetail**
+
+#### ConfirmTx
+
+- **When**: User reviewed send details and is ready to authorize.
+- **Elements**:
+    - "Confirm Transaction" heading, "Back" button
+    - Type: "Native ETH transfer" or "ERC-20 token transfer (SYMBOL)"
+    - Token contract: full address + etherscan link (ERC-20 only)
+    - From: blockie + color dot + full address + etherscan link + wallet title
+    - To: blockie + color dot + full address + etherscan link + ENS name
+    - Amount: value + symbol (USD in parentheses)
+    - Your balance: value + symbol (USD in parentheses)
+    - Estimated network fee: ETH amount (USD in parentheses), fetched async
+    - Warnings (scam address, self-send)
+    - Errors (insufficient balance)
+    - "Send" button (disabled if errors)
+- **Transitions**:
+    - "Send" → password modal → broadcast tx → **WaitTx**
+    - "Send" → password modal → broadcast fails → **ErrorTx**
+    - "Back" → **Send**
+
+#### WaitTx
+
+- **When**: Transaction has been broadcast, waiting for on-chain confirmation.
+- **Elements**:
+    - "Transaction Broadcast" heading (no back button — tx is irreversible)
+    - Amount + symbol
+    - To: color dot + full address + etherscan link
+    - Transaction hash: full hash (tap to copy) + etherscan link
+    - Count-up timer: "Waiting for confirmation... Ns"
+- **Behavior**: Polls `getTransactionReceipt` every 10 seconds.
+- **Transitions**:
+    - Receipt found → **SuccessTx**
+    - 60 seconds without confirmation → **ErrorTx** (timeout message)
+
+#### SuccessTx
+
+- **When**: Transaction confirmed on-chain.
+- **Elements**:
+    - "Transaction Confirmed" heading
+    - Amount + symbol
+    - To: color dot + full address + etherscan link
+    - Block number
+    - Transaction hash: full hash (tap to copy) + etherscan link
+    - "Done" button
+- **Transitions**:
+    - "Done" → **AddressToken** (if `selectedToken` set) or **AddressDetail**
+
+#### ErrorTx
+
+- **When**: Transaction broadcast failed, or timed out waiting for confirmation.
+- **Elements**:
+    - "Transaction Failed" heading
+    - Amount + symbol
+    - To: color dot + full address + etherscan link
+    - Error message (dashed border box)
+    - Transaction hash section (hidden if broadcast failed before getting hash):
+      full hash (tap to copy) + etherscan link
+    - "Done" button
+- **Transitions**:
+    - "Done" → **AddressToken** (if `selectedToken` set) or **AddressDetail**
 
 #### Receive
 
 - **When**: User wants to receive funds at this address.
 - **Elements**:
-    - "Receive" heading
+    - "Receive" heading, "Back" button
     - Instruction text
     - QR code encoding the address
-    - Full address (displayed, selectable)
+    - Full address (color dot, selectable, etherscan link)
     - "Copy address" button
-    - "Back" button
+    - ERC-20 warning (shown when navigating from AddressToken for non-ETH token)
 - **Transitions**:
-    - "Back" → pops to **AddressDetail**
+    - "Back" → **AddressToken** (if `selectedToken` set) or **AddressDetail**
+
+#### TransactionDetail
+
+- **When**: User tapped a transaction row from AddressDetail or AddressToken.
+- **Elements**:
+    - "Transaction" heading, "Back" button
+    - 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
+- **Transitions**:
+    - "Back" → **AddressToken** (if `selectedToken` set) or **AddressDetail**
 
 #### AddToken
 
 - **When**: User wants to track an ERC-20 token on this address.
 - **Elements**:
-    - "Add Token" heading
+    - "Add Token" heading, "Back" button
     - Instruction text (find contract address on Etherscan)
     - Contract address input
     - Token info preview (name, symbol — fetched from contract)
-    - "Add" button, "Cancel" button
+    - Common token quick-pick buttons
+    - "Add" button
 - **Transitions**:
-    - "Add" (valid contract) → pops to **AddressDetail**
-    - "Cancel" → pops to **AddressDetail**
+    - "Add" (valid contract) → **AddressDetail**
+    - "Back" → **AddressDetail**
 
 #### Settings
 
-- **When**: User tapped Settings from Home.
+- **When**: User tapped Settings gear from Home.
 - **Elements**:
-    - "Settings" heading
-    - Network section: RPC endpoint URL input, "Save" button, explanatory text
-    - "Back" button
+    - "Settings" heading, "Back" button
+    - Wallets: "+ Add wallet" button
+    - Display: "Show tracked tokens with zero balance" checkbox
+    - Ethereum RPC: endpoint URL input + "Save" button
+    - Blockscout API: endpoint URL input + "Save" button
+    - Token Spam Protection:
+        - "Hide tokens with fewer than 1,000 holders" checkbox
+        - "Hide transactions from detected fraud contracts" checkbox
+        - "Hide dust transactions below N gwei" checkbox + threshold input
+    - Allowed Sites: list with remove buttons
+    - Denied Sites: list with remove buttons
 - **Transitions**:
-    - "Back" → pops to **Home**
+    - "+ Add wallet" → **AddWallet**
+    - "Back" (or Settings gear again) → **Home**
 
-#### Approval (future)
+#### SiteApproval
 
-- **When**: A connected website requests wallet access or a transaction
-  signature. Opened by the background script, not by user navigation.
+- **When**: A website requests wallet access via `eth_requestAccounts`. Opened
+  in a separate popup by the background script.
 - **Elements**:
-    - "A website is requesting access" heading
-    - Site origin (bold)
-    - Request type and details (preformatted)
-    - "Allow" button, "Deny" button
+    - "Connection Request" heading
+    - Site hostname (bold)
+    - Address that will be shared (color dot + full address + etherscan link)
+    - "Remember my choice for this site" checkbox
+    - "Allow" / "Deny" buttons
 - **Transitions**:
     - "Allow" / "Deny" → closes popup (returns result to background script)
 
+#### TxApproval
+
+- **When**: A connected website requests a transaction via
+  `eth_sendTransaction`. Opened in a separate popup by the background script.
+- **Elements**:
+    - "Transaction Request" heading
+    - Site hostname (bold) + "wants to send a transaction"
+    - From: color dot + full address + etherscan link
+    - To: color dot + full address + etherscan link (or "contract creation")
+    - Value: amount in ETH (4 decimal places)
+    - Data: raw transaction data (shown if present)
+    - Password input
+    - "Confirm" / "Reject" buttons
+- **Transitions**:
+    - "Confirm" (with password) → closes popup (returns result to background)
+    - "Reject" → closes popup (returns rejection to background)
+
 ### External Services
 
 AutistMask is not a fully self-contained offline tool. It necessarily