ticket: use base32 project record ids

.yoi/tickets/00001KSYT8D7G/resolution.md

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+Made `manifest::paths` fallback tests independent from process-global environment mutation.
+
+Implementation:
+- Added narrow private per-key fallback helpers for config/data/runtime path resolution.
+- Public path functions still read the same env vars and pass them in the same precedence order.
+- Empty path env values still resolve as unset.
+- Fallback-order tests now pass direct `Option<PathBuf>` inputs instead of using `std::env::set_var` / `remove_var`.
+- No `PathEnv`, `EnvSnapshot`, env trait, test-support crate, or new env var surface was introduced.
+- Credential env behavior and Pod runtime/process behavior were not changed.
+
+Review:
+- External reviewer `pure-path-fallback-reviewer-20260531` approved implementation commit `e232f54`.
+
+Validation after merge:
+- `cargo fmt --check`
+- `cargo test -p manifest paths`
+- `cargo test -p manifest`
+- `cargo check -p manifest` (passed with unrelated existing `llm-worker` dead_code warning)
+- `./tickets.sh doctor`
+- `git diff --check`
+- `git grep -n -E 'set_var\(|remove_var\(' -- crates/manifest/src/paths.rs || true` produced no matches.