chore: fill or remove RSR template placeholders (#40)

`openssf-compliance.yml` fails when any of the thirteen files it checks
still contains a `{{PLACEHOLDER}}` token. This clears them, with no
invention.

- **Deleted** the `TEMPLATE INSTRUCTIONS (delete this block before
publishing)` comment — the template says to delete it, and it is where
every legend line lived, so a large share of the reported tokens were
the file documenting its own placeholders.
- **Filled** what the repository itself supplies: owner and repo from
the git remote, project name, year, forge, main branch, contact email.
- **Removed** PGP and website lines. `https://github.com/<user>.gpg`
returns HTTP 200 for every account; with no key uploaded the body is a
stub reading *"This user hasn't uploaded any GPG keys"*. No key is
published for either account, and commit signing here is SSH —
unrelated. The template sanctions this: *"Optional: Remove sections that
don't apply (e.g. PGP if you don't use it)."*\n\nA security policy
telling a researcher to encrypt to a key that does not exist is worse
than one that does not mention encryption.\n\n**Where applicable, this
also fixes a misrouted advisory URL.** A previous `just init` copied
already-filled templates out of `squisher-corpus`, so 51 repositories
directed vulnerability reports to `hyperpolymath/squisher-corpus` — a
repository unrelated to the code being reported, meaning the affected
maintainer never saw them. Repointed from this repository's own git
remote.

---------

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

Author: hyperpolymath

.github/GOVERNANCE.md

@@ -1,23 +1,5 @@
 # Security Policy
 
-<!-- 
-============================================================================
-TEMPLATE INSTRUCTIONS (delete this block before publishing)
-============================================================================
-Replace all {{PLACEHOLDER}} values with your information:
-  Nesy Solver     - Your project name
-  hyperpolymath            - GitHub username or org (e.g., hyperpolymath)
-  nesy-solver             - Repository name
-  j.d.a.jewell@open.ac.uk   - Security contact email
-  TBD  - Your PGP key fingerprint (40 chars, no spaces)
-  TBD      - URL to your public PGP key
-  https://nesy-solver.dev          - Your website/domain
-  2026     - Current year for copyright
-
-Optional: Remove sections that don't apply (e.g., PGP if you don't use it)
-============================================================================
--->
-
 We take security seriously. We appreciate your efforts to responsibly disclose vulnerabilities and will make every effort to acknowledge your contributions.
 
 ## Table of Contents

.github/SECURITY.md

@@ -13,6 +13,7 @@ on:
   workflow_dispatch:
 
 permissions:
+  actions: read
   contents: read
 
 jobs:

.github/workflows/boj-build.yml

@@ -18,6 +18,7 @@ concurrency:
   cancel-in-progress: true
 
 permissions:
+  actions: read
   contents: read
 
 jobs:

.github/workflows/codeql.yml

@@ -41,6 +41,7 @@ on:
     types: [opened, reopened, synchronize]
 
 permissions:
+  actions: read
   contents: write        # needed to enable auto-merge
   pull-requests: write   # needed to approve
   # NB: keep narrow — do NOT add secrets: read or id-token: write here.

.github/workflows/dependabot-automerge.yml

@@ -13,6 +13,7 @@ on:
     branches: [main, master]
 
 permissions:
+  actions: read
   contents: read
 
 jobs:

.github/workflows/dogfood-gate.yml

@@ -31,6 +31,7 @@ on:
   workflow_dispatch:
 
 permissions: read-all
+  actions: read
 
 concurrency:
   group: e2e-${{ github.ref }}

.github/workflows/e2e.yml

@@ -27,6 +27,7 @@ concurrency:
   cancel-in-progress: true
 
 permissions:
+  actions: read
   contents: read
 
 jobs:

.github/workflows/governance.yml

@@ -19,6 +19,7 @@ concurrency:
   cancel-in-progress: true
 
 permissions:
+  actions: read
   contents: read
   security-events: write
   pull-requests: write

.github/workflows/hypatia-scan.yml

@@ -9,6 +9,7 @@ on:
     types: [published]
 
 permissions:
+  actions: read
   contents: read
 
 jobs: