docs: revamp homepage and update encryption algorithm info

Author: xrissoula

docs/README.md

@@ -96,8 +96,4 @@ As you deploy more Polykey agents, you can join existing gestalts.
 
 Your gestalt is how other users are able to share secrets with a trusted
 identity. Your identity is the sum of the reputation of all your digital
-identities that are part of the gestalt.
-
-## Comparison to other Tools
-
-TBD
+identities that are part of the gestalt.

docs/reference/architecture/encryption-algorithms.md

@@ -22,7 +22,7 @@ cryptographic algorithms for optimal security and performance.
   - **MAC Size:** 128 bits  
   - This extended 192-bit nonce allows random nonces to be safely used, reducing the risk of nonce reuse and making the encryption scheme misuse-resistant.  
   - A stream cipher approach is employed, encrypting data per block with a fresh, random nonce each time.
-  - Polykey stores its persistent state in an encrypted database, protected by a “Data Encryption Key” (DEK). This DEK is **not** derived from the root key, so rotating the root key does **not** require re-encrypting the entire database.
+  - Polykey stores its persistent state in an encrypted database, protected by a “Data Encryption Key” (DEK). This DEK is not derived from the root key, so rotating the root key does not require re-encrypting the entire database.
   - By combining encryption and authentication, XChaCha20-Poly1305 ensures both confidentiality and integrity of the stored data.
 
 ### Asymmetric Encryption