chore: rename package to dpdpstack-python-sdk in documentation

Author: Samarthegde

README.md

@@ -20,9 +20,9 @@ enterprise tools "cost more than a month's revenue."
 
 ## Install
 ```bash
-pip install dpdpstack            # core, no dependencies
-pip install "dpdpstack[django]"  # + Django adapter
-pip install "dpdpstack[crypto]"  # + RS256-signed certificates (PyJWT + cryptography)
+pip install dpdpstack-python-sdk            # core, no dependencies
+pip install "dpdpstack-python-sdk[django]"  # + Django adapter
+pip install "dpdpstack-python-sdk[crypto]"  # + RS256-signed certificates (PyJWT + cryptography)
 ```
 
 ## Quickstart (framework-agnostic)
@@ -109,7 +109,7 @@ dpdpstack verify cert.jwt --public-key ./keys/cert_public.pem
 | `audit` | hash-chained, tamper-evident log; pluggable store (in-memory, JSONL, Django) |
 | `erasure` | `ErasureEngine` - legal-hold-aware resolve + your `executor` |
 | `certificate` | `issue_certificate()` → verifiable Certificate of Erasure |
-| `signing` *(extra)* | RS256-sign/verify a certificate - `pip install dpdpstack[crypto]` |
+| `signing` *(extra)* | RS256-sign/verify a certificate - `pip install dpdpstack-python-sdk[crypto]` |
 | `contrib.django` | model-backed audit store + `erase_instance()` + `@pii(...)` |
 
 ## Status & scope