test: remove vacuous guard tests and duplicate URL-encoding tests in wiki safe outputs

[github-actions]

Test Suite Reduction: wiki safe outputs

What was wrong

• create_wiki_page.rs::test_page_already_exists_guard_returns_failure: Constructs a local if page_exists { ... } else { None } conditional inline and asserts on that local value — never calls execute_impl or any production code. The doc-comment even says explicitly: "if the guard were accidentally removed from execute_impl, this test would still pass."
• create_wiki_page.rs::test_new_page_passes_guard: Same vacuous pattern (page_exists = false, local conditional, assert!(result.is_none())).
• update_wiki_page.rs::test_page_not_found_guard_returns_failure: Same pattern as above.
• update_wiki_page.rs::test_existing_page_passes_guard: Same pattern.
• update_wiki_page.rs — 4× test_path_segment_* tests: Exact duplicates of identical tests already present in create_wiki_page.rs. Both modules import the same PATH_SEGMENT constant from super::, so these tests cover no additional code paths.

Changes

Test	File	Action	Reason
test_page_already_exists_guard_returns_failure	create_wiki_page.rs	Removed	Vacuous — tests locally-constructed conditional, not production code
test_new_page_passes_guard	create_wiki_page.rs	Removed	Vacuous — same pattern
test_page_not_found_guard_returns_failure	update_wiki_page.rs	Removed	Vacuous — same pattern
test_existing_page_passes_guard	update_wiki_page.rs	Removed	Vacuous — same pattern
test_path_segment_encodes_fragment_delimiter	update_wiki_page.rs	Removed	Duplicate of identical test in create_wiki_page.rs
test_path_segment_encodes_query_delimiter	update_wiki_page.rs	Removed	Duplicate
test_path_segment_encodes_space	update_wiki_page.rs	Removed	Duplicate
test_path_segment_does_not_encode_safe_chars	update_wiki_page.rs	Removed	Duplicate

Verification

• cargo test: all 1751 unit tests + all integration tests pass, 0 failed ✅
• cargo clippy --all-targets --all-features: no warnings or errors ✅

Warning

Firewall blocked 2 domains

The following domains were blocked by the firewall during workflow execution:

• spsprodeus21.vssps.visualstudio.com
• spsprodweu4.vssps.visualstudio.com

To allow these domains, add them to the network.allowed list in your workflow frontmatter:

network:
  allowed:
    - defaults
    - "spsprodeus21.vssps.visualstudio.com"
    - "spsprodweu4.vssps.visualstudio.com"

See Network Configuration for more information.

Generated by Test Reducer · sonnet46 2.5M · ◷