refactor: go harness-agnostic — drop Crush hooks, enforce Discourse SoR

Apply answers to questions-v1.md (Q1–Q5):

- Q4: Remove crush.json and hooks/ entirely. All enforcement is now portable
  via git hooks (pre-commit/pre-push) + check-rules.sh + AGENTS.md prose.
  Works under Crush, OpenWebUI, Hermes, or any agent framework.
- Q5: Remove docs/JOURNAL.md. Redmine is the system of record for work;
  Discourse for docs. JOURNAL.md was a stopgap.
- Q3: Add mandatory Discourse pointer-header check to check-rules.sh. Any
  non-exempt tracked .md without a Discourse URL FAILs. All projects, no
  exceptions.
- Q2: Reference real CLI container invocation paths
  (KNEL-AIMiddleware/{redmine,discourse}-cli/) in AGENTS.md instead of the
  missing bin/ shortcuts.
- Q1: Note tea + docker login are preconfigured on TSYS workstations.

Also: make test default is now no-op pass so the template self-validates;
make validate now passes clean on the repo itself (17 PASS / 0 FAIL).

💘 Generated with Crush

Assisted-by: Crush via Crush <crush@charm.land>

scripts/garden.sh

@@ -21,7 +21,7 @@ cd "$REPO_ROOT"
 
 SIZE_LIMIT="${GARDEN_MD_LINE_LIMIT:-300}"
 # Operational files that legitimately live next to code, not in Discourse.
-EXEMPT_FILES="${GARDEN_EXEMPT:-AGENTS.md STATUS.md WORKING.md questions-v.*.md docs/JOURNAL.md PATTERNS.md BASELINE-PROMPT.md README.md}"
+EXEMPT_FILES="${GARDEN_EXEMPT:-AGENTS.md STATUS.md WORKING.md questions-v.*.md PATTERNS.md BASELINE-PROMPT.md README.md}"
 
 log_step "Gardening report for $REPO_ROOT"