fix(gateway): remove no-verify SSL context from proxy (#7)

All internal services use plain HTTP (Docker network). The
_internal_ssl_ctx with disabled cert verification was a no-op
for HTTP URLs but suggested TLS bypass was in use.

- Removed _internal_ssl_ctx from config.py
- Removed ssl import from config.py
- proxy.py now calls urlopen() without context parameter
- External calls (OpenAI, SMTP2GO, Open Library) already use
  default TLS verification

Verified: dashboard, trips, fitness, budget, inventory all respond correctly.

claude_code_remaining_issues_prompt.txt

@@ -0,0 +1,48 @@
+Work in the `platform` repo and continue from the current remediation state.
+
+Use Gitea issues as the source of truth:
+- `#1` umbrella
+- `#5` Gateway Trust Model
+- `#7` Transport Security
+- `#8` Dependency Security
+- `#9` Performance Hardening
+
+First, re-verify the repo state before changing anything. Do not trust prior summaries blindly.
+
+Current known remaining work:
+1. `#7`
+- Gateway proxy still uses `_internal_ssl_ctx` with disabled cert/hostname verification
+- Fix the real proxy path, not just external image fetches
+
+2. `#5`
+- `SERVICE_LEVEL_AUTH` trust model still exists in the gateway
+- Inventory still exposes `/debug-nocodb`
+- Inventory search/filter construction still needs hardening
+
+3. `#9`
+- Inventory `/issues` and `/needs-review-count` still do full scans
+- Budget `/transactions/recent` still fans out across all accounts
+- Existing cache improvements are helpful but do not complete the issue
+
+4. `#8`
+- `.gitea/workflows/security.yml` exists
+- The remaining work is operational: verify/document exactly what still requires a Gitea runner and avoid overstating completion
+
+Instructions:
+- Make minimal, production-oriented fixes
+- After each issue-sized change, verify it
+- Comment on the relevant Gitea issue with:
+  - what changed
+  - files touched
+  - verification performed
+  - what remains
+- Do not close `#5`, `#7`, or `#9` unless the actual code and behavior support it
+- Do not mark `#8` completed unless the repo-side work is fully done and the remaining runner dependency is clearly documented
+- Do not reopen already completed issues unless you find a real regression
+- Do not revert unrelated user changes
+
+Final output format:
+- `Completed:`
+- `Partial:`
+- `Blocked:`
+- `Manual ops actions:`