chore: correct workspace repository URL

Point Cargo.toml and PRD.md at the canonical repo
`github.com/Steelbore/Caliper` (capital C, Steelbore org) instead of
the pre-publication placeholder `github.com/UnbreakableMJ/caliper`.

Affects:
- workspace Cargo.toml `repository` field (load-bearing for crates.io)
- PRD.md document-metadata table row
- PRD.md example error-payload docs_url

Refs related to other Steelbore projects (rust-guidelines,
steelbore-standard) are left as-is — they live under separate repos
that may or may not have moved.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Signed-off-by: UnbreakableMJ <34196588+UnbreakableMJ@users.noreply.github.com>

Author: UnbreakableMJ

Cargo.toml

@@ -53,7 +53,7 @@ edition = "2024"
 rust-version = "1.88.0"
 authors = ["Mohamed Hammad <Mohamed.Hammad@Steelbore.com>"]
 license = "GPL-3.0-or-later"
-repository = "https://github.com/UnbreakableMJ/caliper"
+repository = "https://github.com/Steelbore/Caliper"
 homepage = "https://Caliper.Steelbore.com/"
 documentation = "https://Caliper.Steelbore.com/docs/"
 readme = "README.md"

PRD.md

@@ -20,7 +20,7 @@ Fonts: Share Tech Mono (headings), Inconsolata (body)
 | License          | GPL-3.0-or-later                               |
 | Canonical Name   | `caliper`                                      |
 | Crate            | `caliper-trace`                                |
-| Repository       | `github.com/UnbreakableMJ/caliper`             |
+| Repository       | `github.com/Steelbore/Caliper`                 |
 | Standard         | The Steelbore Standard v1.0 + SFRS v1.0.0      |
 | Status           | Draft for review                               |
 
@@ -523,7 +523,7 @@ All non-zero exits emit a structured error object on stderr.
     "hint": "Run 'caliper inspect --hardware --json' to see available backends, or use '--accelerator cpu' to fall back to CPU-only mode.",
     "timestamp": "2026-04-30T14:30:00Z",
     "command": "caliper trace photo.jpg --accelerator gpu",
-    "docs_url": "https://github.com/UnbreakableMJ/caliper/docs/hardware.md#gpu"
+    "docs_url": "https://github.com/Steelbore/Caliper/docs/hardware.md#gpu"
   }
 }
 ```