feat(demos): add basic-usage demo suite proving core features work

.agent/demos/CURATED_CATALOG.md

@@ -31,6 +31,12 @@ Generated by `devtools workspace demo-shelf`.
 - analysis: `attachment-acquisition-census/ANALYSIS.md`
 - files: 5 (4 readable)
 
+## Basic Usage — The Features Actually Work
+
+- id: `basic-usage`
+- readme: `basic-usage/README.md`
+- files: 11 (11 readable)
+
 ## D4 Behavioral Archaeology
 
 - id: `d4-behavioral-archaeology`

.agent/demos/README.md

@@ -22,6 +22,9 @@ better demo supersedes them.
   - readme: `attachment-acquisition-census/README.md`
   - analysis: `attachment-acquisition-census/ANALYSIS.md`
   - files: 5 (4 readable)
+- `basic-usage` — Basic Usage — The Features Actually Work
+  - readme: `basic-usage/README.md`
+  - files: 11 (11 readable)
 - `d4-behavioral-archaeology` — D4 Behavioral Archaeology
   - files: 9 (6 readable)
 - `uplift-two-arm` — Handoff-Pack Uplift Experiment

.agent/demos/basic-usage/01-find-query.txt

@@ -0,0 +1,6 @@
+$ polylogue --origin codex-session find "sessions where origin:codex-session" then select --json
+[{"id":"codex-session:demo-receipts","origin":"codex-session","title":"Fix the clock-sensitive test and prove the suite passes.","date":"2026-07-04"},{"id":"codex-session:demo-anti-grep","origin":"codex-session","title":"Explain error budgets without running a command.","date":"2026-07-04"},{"id":"codex-session:demo-terminal-error","origin":"codex-session","title":"Run the command and stop if it fails.","date":"2026-07-04"},{"id":"codex-session:demo-lineage-subagent","origin":"codex-session","title":"demo-lineage-subagent","date":"2026-07-04"},{"id":"codex-session:demo-lineage-fork","origin":"codex-session","title":"Map the demo lineage base context.","date":"2026-07-04"},{"id":"codex-session:demo-lineage-parent","origin":"codex-session","title":"Map the demo lineage base context.","date":"2026-07-04"},{"id":"codex-session:demo-00","origin":"codex-session","title":"Could you review this code for potential issues?","date":"2024-01-23"}]
+
+$ polylogue find "actions where tool:bash | group by origin | count"
+session.origin=claude-code-session count=6
+session.origin=codex-session count=3

.agent/demos/basic-usage/02-read.txt

@@ -0,0 +1,34 @@
+$ polylogue find id:codex-session:demo-receipts then read --view transcript
+# Fix the clock-sensitive test and prove the suite passes.
+
+`codex-session:demo-receipts`
+
+## user
+Fix the clock-sensitive test and prove the suite passes.
+
+## assistant
+
+
+## tool
+{"metadata": {"exit_code": 1}, "output": "F  tests/test_clock.py::test_uses_monotonic_clock\n1 failed in 0.18s"}
+
+## assistant
+All tests pass. The clock fix is complete.
+
+## user
+The receipt disagrees. Correct the fixture and verify again.
+
+## assistant
+
+
+## tool
+{"metadata": {"exit_code": 0}, "output": "Done!"}
+
+## assistant
+
+
+## tool
+{"metadata": {"exit_code": 0}, "output": ".  1 passed in 0.16s"}
+
+## assistant
+Verified after the correction: 1 passed in 0.16s.

.agent/demos/basic-usage/03-search.txt

@@ -0,0 +1,2 @@
+$ polylogue find "clock" then select --json
+[{"id":"chatgpt-export:cross-material-duplicate-01","origin":"chatgpt-export","title":"Flaky clock test fix summary","date":"2026-07-04"},{"id":"chatgpt-export:cross-material-duplicate-02","origin":"chatgpt-export","title":"Flaky clock test fix summary","date":"2026-07-04"},{"id":"claude-code-session:demo-lineage-compaction-parent","origin":"claude-code-session","title":"Fix the flaky clock test before continuing the demo lineage audit.","date":"2026-07-04"},{"id":"codex-session:demo-receipts","origin":"codex-session","title":"Fix the clock-sensitive test and prove the suite passes.","date":"2026-07-04"}]

.agent/demos/basic-usage/04-resume.txt

@@ -0,0 +1,2 @@
+$ polylogue find id:codex-session:demo-receipts then continue
+codex resume demo-receipts