docs: update docs for v1.1.0 features

Document message truncation, reconnect backoff, dork and wayback
plugins. Update roadmap, tasks, and plugin table.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docs/USAGE.md

@@ -109,6 +109,8 @@ level = "info"                # Logging level: debug, info, warning, error
 | `!headers <url>` | HTTP header fingerprinting |
 | `!exploitdb <search\|id\|cve\|update>` | Search local Exploit-DB mirror |
 | `!payload <type> [variant]` | Web vuln payload templates |
+| `!dork <category\|list> [target]` | Google dork query builder |
+| `!wayback <url> [YYYYMMDD]` | Wayback Machine snapshot lookup |
 
 ### Command Shorthand
 
@@ -355,3 +357,46 @@ The `message` object provides:
 | `message.is_channel` | Whether target is a channel |
 | `message.params` | All message parameters |
 | `message.tags` | IRCv3 message tags (dict) |
+
+## Message Truncation
+
+Messages are automatically split at UTF-8 safe boundaries to comply with
+the IRC 512-byte line limit (RFC 2812). The overhead of `PRIVMSG <target> :`
+and `\r\n` is accounted for, so plugins can send arbitrarily long text
+without worrying about protocol limits.
+
+## Reconnect Backoff
+
+On connection loss, the bot reconnects with exponential backoff and jitter:
+
+- Initial delay: 5 seconds
+- Growth: doubles each attempt (5s, 10s, 20s, 40s, ...)
+- Cap: 300 seconds (5 minutes)
+- Jitter: +/- 25% to avoid thundering herd
+- Resets to 5s after a successful connection
+
+### `!dork` -- Google Dork Query Builder
+
+Generate Google dork queries for a target domain. Template-based, no HTTP
+requests -- just outputs the query string for manual use.
+
+```
+!dork list                    List all dork categories
+!dork admin example.com       Admin/login panel dorks
+!dork files example.com       Exposed document dorks
+```
+
+Categories: admin, backup, cloud, config, creds, dirs, errors, exposed,
+files, login.
+
+### `!wayback` -- Wayback Machine Lookup
+
+Check the Wayback Machine for archived snapshots of a URL.
+
+```
+!wayback example.com                Check latest snapshot
+!wayback example.com/page 20240101  Check snapshot near a date
+```
+
+Auto-prepends `https://` if no scheme is provided. Uses the Wayback Machine
+availability API.