CI: fix env context reference in job-level env sections.

GitHub Actions doesn't allow referencing workflow-level env variables
from job-level env sections. Fixed by:
- Replacing ${{ env.PYTEST_OPTS_BASE }} with full values in job-level env
- Keeping ${{ env.PYTEST_OPTS_BASE }} in step-level env (which is valid)

This resolves the "Unrecognized named-value: 'env'" errors.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

.github/workflows/ci.yaml

@@ -318,6 +318,7 @@ jobs:
           LIGHTNINGD_POSTGRES_NO_VACUUM: 1
           VALGRIND: ${{ matrix.VALGRIND }}
           PREV_LIGHTNINGD: /tmp/old-cln/usr/bin/lightningd
+          PYTEST_OPTS: ${{ env.PYTEST_OPTS_BASE }}
         run: |
           env
           cat config.vars
@@ -336,7 +337,7 @@ jobs:
     timeout-minutes: 120
     env:
       RUST_PROFILE: release # Has to match the one in the compile step
-      PYTEST_OPTS: ${{ env.PYTEST_OPTS_BASE }}
+      PYTEST_OPTS: --reruns=10 -vvv --junit-xml=report.xml --timeout=1800 --durations=10
     needs:
       - compile
     strategy:
@@ -452,7 +453,7 @@ jobs:
     env:
       RUST_PROFILE: release # Has to match the one in the compile step
       CFG: compile-gcc
-      PYTEST_OPTS: ${{ env.PYTEST_OPTS_BASE }} --test-group-random-seed=42
+      PYTEST_OPTS: --reruns=10 -vvv --junit-xml=report.xml --timeout=1800 --durations=10 --test-group-random-seed=42
     needs:
       - compile
     strategy:
@@ -530,7 +531,7 @@ jobs:
       RUST_PROFILE: release
       SLOW_MACHINE: 1
       TEST_DEBUG: 1
-      PYTEST_OPTS: ${{ env.PYTEST_OPTS_BASE }} --test-group-random-seed=42 
+      PYTEST_OPTS: --reruns=10 -vvv --junit-xml=report.xml --timeout=1800 --durations=10 --test-group-random-seed=42 
     needs:
       - compile
     strategy:
@@ -609,7 +610,7 @@ jobs:
     env:
       VALGRIND: 0
       GENERATE_EXAMPLES: 1
-      PYTEST_OPTS: ${{ env.PYTEST_OPTS_BASE }}
+      PYTEST_OPTS: --reruns=10 -vvv --junit-xml=report.xml --timeout=1800 --durations=10
       TEST_NETWORK: regtest
     needs:
       - compile
@@ -655,7 +656,7 @@ jobs:
     timeout-minutes: 120
     env:
       RUST_PROFILE: release # Has to match the one in the compile step
-      PYTEST_OPTS: ${{ env.PYTEST_OPTS_BASE }}
+      PYTEST_OPTS: --reruns=10 -vvv --junit-xml=report.xml --timeout=1800 --durations=10
     needs:
       - compile
     strategy: