fix(sonar): point at this repo's own SonarCloud project

sonar.projectKey was hyperpolymath_rsr-template-repo, copied verbatim from
the RSR template this repo was derived from.

The workflow currently fails at authentication (no SONAR_TOKEN secret), so
nothing is being mis-submitted today -- but once a token is added this repo
would report into the template's project alongside every other repo with
the copied key. Fix the key first.

Organisation is unchanged: the estate consolidates SonarCloud under the
single hyperpolymath org (metadatastician/IDApTIK#42).

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Signed-off-by: Jonathan D.A. Jewell <6759885+hyperpolymath@users.noreply.github.com>

Author: hyperpolymath

sonar-project.properties

@@ -1,9 +1,9 @@
 # SPDX-License-Identifier: MPL-2.0
 # SonarQube Cloud (SonarCloud) configuration.
-# Project: https://sonarcloud.io/project/overview?id=hyperpolymath_rsr-template-repo
+# Project: https://sonarcloud.io/project/overview?id=hyperpolymath_anytype
 # Requires the SONAR_TOKEN repository secret + a SonarCloud project (owner setup).
 sonar.organization=hyperpolymath
-sonar.projectKey=hyperpolymath_rsr-template-repo
+sonar.projectKey=hyperpolymath_anytype
 
 # Analysable surface = shell scripts + any JS/TS the template carries. Idris2,
 # Zig, Elixir and AffineScript have no SonarCloud analyser; vendored, generated,