chore: Add readme file for client and server

fix: When editor mode is switched to insert or command activate main_panel

Author: ByteMaster2003

README.md

@@ -1 +1,12 @@
-### Null Talk
+# Null Talk
+A secure, terminal-based encrypted chat system written in Rust.
+
+## Why Null Talk?
+- End-to-end encrypted chat, CLI-native
+- Works across Linux, macOS, and Windows
+- Lightweight, no bloat, hacker-friendly interface
+- Ideal for devs who love tmux, ssh, and terminals
+
+## Installation
+- [Client Guide](./client/README.md)
+- [Server Guide](./server/README.md)

assets/direct-message.png

@@ -0,0 +1,129 @@
+## Installation
+### From binaries (recommended)
+#### Linux (binary)
+```
+// Get the client binary from release
+wget https://github.com/ByteMaster2003/null-talk/releases/download/v1.0.0/null-talk-linux-client-v1.0.0
+
+// Move it to bin directory
+mv null-talk-linux-client-v1.0.0 /usr/local/bin/null-talk
+
+// Give permission to execute
+chmod +x /usr/local/bin/null-talk
+
+// Run the command
+null-talk
+
+```
+
+#### MacOs (binary)
+```
+// Get the client binary from release
+wget https://github.com/ByteMaster2003/null-talk/releases/download/v1.0.0/null-talk-macos-client-v1.0.0
+
+// Move it to bin directory
+mv null-talk-macos-client-v1.0.0 /usr/local/bin/null-talk
+
+// Give permission to execute
+chmod +x /usr/local/bin/null-talk
+
+// Run the command
+null-talk
+
+```
+
+## Configure server connection
+- create a configuration file `config.toml`
+```
+hostname = "localhost" 		// domain or IpAddress of server
+port = "8080"
+name = "ByteMaster"
+
+public_key = "~/.ssh/id_rsa.pub"
+private_key = "~/.ssh/id_rsa"
+
+```
+- Now run `null-talk config.toml`
+- If this file is not provided then `null-talk` will ask for it
+![Null Talk Demo](assets/null-talk-config.png)
+
+- When connection to the server is successful then this screen will appear
+![Null Talk Connection Success](assets/null-talk-conn-success.png)
+
+- If connection is failed then you will see this screen
+![Null Talk Connection Error](assets/null-talk-conn-err.png)
+
+- Any Error of Information will be shown at the bottom of main panel
+
+## Layout
+- This application has two panels `side_panel & main_panel`
+- By default `main_panel` is active
+- To switch panels we can use `⬅️ or h` and `➡️ or l`
+- Panel switching will only work in `NORMAL` mode
+
+## Modes
+- This application has total 3 modes
+- `NORMAL, INSERT and COMMAND`
+- press `i` for insert mode
+- press `/` for cmd mode
+- press `esc` key for normal mode
+
+## Available Commands in cmd Mode
+- `cmd: q` or `ctrl + c` exists the application 
+- `cmd: my-id` will show your user_id. 
+- user_id is a unique hash of `public_key` provided by user
+![Null Talk Show user_id](assets/show-user-id.png)
+- `cmd: mkgp path/to/make-group.toml` creates new group
+
+```
+# required
+name = "Cypher"
+
+# optional, if not provided server will create new id
+group_id = "53df4ec65397d404aa54ef7afda4005356a17388e49fb9e1859417af1ab45905"
+
+# user_id of members, only these two member will be able to join the group
+members = [
+	"8e9c9db840b1b66e77ba817b5bf341fbadd71c9388e4768410d590983742881a",
+	"bc7e780e2b26dec01fa791a617ef51bb93755f404a8ae150279aeb9d55d5ccab",
+]
+
+```
+![Null Talk Show user_id](assets/make-group.png)
+- `cmd: new path/to/session.toml` this will help us to `join group` or initiate `direct messages`
+```
+# [dm]			direct_message
+# [group]		group_chat
+# (required)
+connection_type = "group"
+
+# it can be username or group name
+# (required)
+name = "Cypher"
+
+# group_id or user_id
+id = "53df4ec65397d404aa54ef7afda4005356a17388e49fb9e1859417af1ab45905"
+
+# encryption algorithm
+# Supported algorithms: AES256, ChaCha20 --> default(AES256)
+algo = "AES256"
+
+```
+![Null Talk Show user_id](assets/direct-message.png)
+- If user is not online then we might get this error `Member is not online`
+
+
+## Sessions
+- to switch sessions press `esc` key for normal mode
+- press `⬅️ or h` to select side panel
+- and now use `⬇️ or j` and `⬆️ or k` to select some session
+- now press enter to activate that session
+
+
+# ⚠️ Current Limitations
+
+### This is an early release, so a few features are not fully implemented yet:
+
+- Encrypted private keys are not yet supported. Use unencrypted private keys when running the client.
+- Messages are not persistent — once the application is terminated, all messages are lost.
+- TLS integration and other security enhancements are planned for future versions.