diff --git a/README.md b/README.md
index fc3f713..5eafc18 100644
--- a/README.md
+++ b/README.md
@@ -28,12 +28,15 @@ Use pg_ash when you need:
 - a tool that can run on RDS, Cloud SQL, AlloyDB, Supabase, Neon, and similar
   managed platforms
 
-## Quick Start
+## Quick start
 
 The current `main` branch contains the 2.0 beta 1 SQL in `sql/`.
 
+For automatic sampling, install both optional helper extensions first:
+
 ```sql
 create extension if not exists pg_stat_statements;
+create extension if not exists pg_cron;
 
 \i sql/ash-install.sql
 
@@ -45,7 +48,14 @@ select * from ash.top('query_id');
 select * from ash.chart(since => now() - interval '5 minutes', color => true);
 ```
 
-## Color Output
+`pg_stat_statements` provides query text and query-level metrics. `pg_cron`
+drives automatic sampling, partition rotation, and rollups. If `pg_cron` is not
+available in your environment, omit it and use an external scheduler instead;
+see [Scheduling](#scheduling).
+
+![pg_ash animated investigation demo](demos/ash_demo.gif)
+
+## Color output
 
 pg_ash can render compact terminal charts with ANSI colors when `color => true`
 or `set ash.color = on` is used.
@@ -60,7 +70,7 @@ For the latest stable v1.5 tag, check out `v1.5` first and use:
 \i sql/ash-install.sql
 ```
 
-## Upgrade To 2.0
+## Upgrade to 2.0
 
 2.0 is a breaking reader-API release. Upgrade scripts are cumulative; run the
 missing scripts in order.
@@ -131,7 +141,7 @@ Filters are consistent where they apply:
 is usually the right first cut because it surfaces short spikes that averages
 hide.
 
-## Investigation Flow
+## Investigation flow
 
 ### 1. Is it bad now, or was it a spike?
 
@@ -238,7 +248,7 @@ Dump a wider incident window with psql:
 ) to '/tmp/ash-incident.csv' csv header
 ```
 
-## Chart Rendering
+## Chart rendering
 
 `ash.chart()` is for humans. `ash.timeline()` is the typed-data companion.
 
@@ -275,7 +285,7 @@ Then run:
 select * from ash.chart(since => now() - interval '1 hour', color => true) :color
 ```
 
-## Machine Report
+## Machine report
 
 `ash.report()` returns one JSONB payload for monitoring and health-assessment
 systems.
@@ -355,7 +365,7 @@ alter system set cron.log_run = off;
 
 This requires a restart because `cron.log_run` is postmaster-context.
 
-## Retention And Storage
+## Retention and storage
 
 Raw samples use a PGQ-style ring of partitions. Defaults:
 
@@ -419,7 +429,7 @@ If `pg_stat_statements` is installed after pg_ash, or moved to another schema:
 select ash._apply_pgss_search_path();
 ```
 
-## Catalog Docs
+## Catalog docs
 
 pg_ash documents itself in the database:
 
@@ -446,7 +456,7 @@ alter system set compute_query_id = 'on';
 select pg_reload_conf();
 ```
 
-## Compared To Alternatives
+## Compared to alternatives
 
 | | pg_ash | pg_wait_sampling / pgsentinel | External sampling |
 |---|---|---|---|
@@ -461,7 +471,7 @@ pg_ash is not a replacement for in-process 10ms samplers when you control the
 server and need sub-second detail. It is for durable, portable ASH on real
 managed Postgres.
 
-## Known Limits
+## Known limits
 
 - Primary only: pg_ash writes sample and rollup rows.
 - It samples one database installation but sees activity from all databases.
@@ -488,7 +498,7 @@ python3 devel/scripts/ash_sql_chain.py fresh-install-path
 python3 devel/scripts/ash_sql_chain.py full-upgrade-chain
 ```
 
-Run the experimental demo recorder:
+Run the demo recorder:
 
 ```bash
 cd demos
diff --git a/demos/README.md b/demos/README.md
index a70e0c7..6d6957f 100644
--- a/demos/README.md
+++ b/demos/README.md
@@ -1,12 +1,12 @@
 # pg_ash demo recording
 
-This directory contains the experimental animated GIF recorder for pg_ash demos.
-The generated GIF is not embedded in the top-level README until its rendering is
-readable on GitHub desktop and mobile.
+This directory produces the animated GIF embedded in the top-level README: a
+short walkthrough of the 2.0 investigation flow, driven against a live Postgres
+container.
 
 | File | What it is |
 |------|-----------|
-| `ash_demo.gif` | The rendered GIF (committed for iteration; not embedded in the top-level README) |
+| `ash_demo.gif` | The rendered GIF (committed; used by the top-level README) |
 | `ash_demo.cast` | asciinema v3 cast file — source of truth for the GIF |
 | `record.sh` | End-to-end recorder: Docker → pg_ash install → workload → tmux/asciinema → agg |
 | `Dockerfile` | Pre-baked `postgres:${PG_MAJOR}` image with pg_cron + `shared_preload_libraries` compiled in — so the container boots preloaded, no runtime apt-get + restart |
diff --git a/demos/ash_demo.cast b/demos/ash_demo.cast
index 1ddb469..6072235 100644
--- a/demos/ash_demo.cast
+++ b/demos/ash_demo.cast
@@ -1,1152 +1,1151 @@
-{"version": 2, "width": 168, "height": 32, "timestamp": 1783554009, "idle_time_limit": 3.0, "env": {"TERM": "tmux-256color", "SHELL": "/bin/bash"}}
+{"version": 2, "width": 168, "height": 32, "timestamp": 1783560969, "idle_time_limit": 3.0, "env": {"TERM": "tmux-256color", "SHELL": "/bin/bash"}}
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     bucket_start      \u2502 aas  \u2502                                      detail                                       \u2502                                                                                                          chart                                                                                                          \u2502\r\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\r\n\u2502                        \u2502      \u2502                                                                                   \u2502 \u001b[38;2;255;085;085m\u2588\u001b[0m Lock:tuple  \u001b[38;2;255;085;085m\u2593\u001b[0m Lock:transactionid  \u001b[38;2;255;165;000m\u2591\u001b[0m Timeout:PgSleep  \u001b[38;2;080;250;123m\u2592\u001b[0m CPU*  \u001b[38;2;180;180;180m\u00b7\u001b[0m Other \u2502\r\n\u2502 2026-07-08 23:36:00+00 \u2502 2.62 \u2502 Lock:tuple=1.13 Lock:transactionid=0.28 Timeout:PgSleep=0.30 CPU*=0.47 Other=0.44 \u2502 \u001b[38;2;255;085;085m\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u001b[0m\u001b[38;2;255;085;085m\u2593\u2593\u001b[0m\u001b[38;2;255;165;000m\u2591\u2591\u001b[0m\u001b[38;2;080;250;123m\u2592\u2592\u2592\u001b[0m\u001b[38;2;180;180;180m\u00b7\u00b7\u00b7\u001b[0m                                                      \u2502\r\n\u2502 2026-07-08 23:37:00+00 \u2502 6.45 \u2502 Lock:tuple=3.82 Lock:transactionid=0.97 Timeout:PgSleep=0.97 CPU*=0.35 Other=0.34 \u2502 \u001b[38;2;255;085;085m\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u001b[0m\u001b[38;2;255;085;085m\u2593\u2593\u2593\u2593\u2593\u2593\u001b[0m\u001b[38;2;255;165;000m\u2591\u2591\u2591\u2591\u2591\u2591\u001b[0m\u001b[38;2;080;250;123m\u2592\u2592\u001b[0m\u001b[38;2;180;180;180m\u00b7\u00b7\u001b[0m                                \u2502\r\n\u2502 2026-07-08 23:38:00+00 \u2502 6.45 \u2502 Lock:tuple=3.75 Lock:transactionid=1.05 Timeout:PgSleep=0.97 CPU*=0.35 Other=0.33 \u2502 \u001b[38;2;255;085;085m\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u001b[0m\u001b[38;2;255;085;085m\u2593\u2593\u2593\u2593\u2593\u2593\u001b[0m\u001b[38;2;255;165;000m\u2591\u2591\u2591\u2591\u2591\u2591\u001b[0m\u001b[38;2;080;250;123m\u2592\u2592\u001b[0m\u001b[38;2;180;180;180m\u00b7\u00b7\u001b[0m                                 \u2502\r\n\u2502 2026-07-08 23:39:00+00 \u2502 6.77 \u2502 Lock:tuple=3.82 Lock:transactionid=1.10 Timeout:PgSleep=1.00 CPU*=0.40 Other=0.45 \u2502 \u001b[38;2;255;085;085m\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u001b[0m\u001b[38;2;255;085;085m\u2593\u2593\u2593\u2593\u2593\u2593\u2593\u001b[0m\u001b[38;2;255;165"]
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-[70.119186, "o", "\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\r\n\u2502        key         \u2502 query_text \u2502 source \u2502 avg_aas \u2502 peak_aas \u2502 p99_aas \u2502 backend_seconds \u2502  pct  \u2502\r\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\r\n\u2502 Lock:tuple         \u2502            \u2502 raw    \u2502    3.24 \u2502     3.82 \u2502    3.82 \u2502          973.00 \u2502 56.47 \u2502\r\n\u2502 Lock:transactionid \u2502            \u2502 raw    \u2502    0.88 \u2502     1.10 \u2502    1.10 \u2502          264.00 \u2502 15.32 \u2502\r\n\u2502 Timeout:PgSleep    \u2502            \u2502 raw    \u2502    0.84 \u2502     1.00 \u2502    1.00 \u2502          251.00 \u2502 14.57 \u2502\r\n\u2502 CPU*               \u2502            \u2502 raw    \u2502    0.40 \u2502     0.47 \u2502    0.47 \u2502          120.00 \u2502  6.96 \u2502\r\n\u2502 Client:ClientRead  \u2502            \u2502 raw    \u2502    0.38 \u2502     0.45 \u2502    0.45 \u2502          115.00 \u2502  6.67 \u2502\r\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\r\n(5 rows)\r\n\r\n\u001b[?2004h"]
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-[111.347939, "o", "-- Q5: full wait profile of the top guilty query?\r\n\u001b[?2004hdemo=# "]
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                       \u2502      \u2502                                                                                                \u2502 \u001b[38;2;255;085;085m\u2588\u001b[0m Lock:tuple  \u001b[38;2;255;085;085m\u2593\u001b[0m Lock:transactionid  \u001b[38;2;255;165;000m\u2591\u001b[0m Timeout:PgSleep  \u001b[38;2;255;220;100m\u2592\u001b[0m Client:ClientRead  \u001b[38;2;180;180;180m\u00b7\u001b[0m Other \u2502\r\n\u2502 2026-07-09 01:32:00+00 \u2502 2.90 \u2502 Lock:tuple=1.27 Lock:transactionid=0.33 Timeout:PgSleep=0.33 Client:ClientRead=0.55 Other=0.42 \u2502 \u001b[38;2;255;085;085m\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u001b[0m\u001b[38;2;255;085;085m\u2593\u2593\u001b[0m\u001b[38;2;255;165;000m\u2591\u2591\u001b[0m\u001b[38;2;255;220;100m\u2592\u2592\u2592\u001b[0m\u001b[38;2;180;180;180m\u00b7\u00b7\u00b7\u001b[0m                                                                  \u2502\r\n\u2502 2026-07-09 01:33:00+00 \u2502 6.62 \u2502 Lock:tuple=3.68 Lock:transactionid=1.03 Timeout:PgSleep=0.95 Client:ClientRead=0.40 Other=0.56 \u2502 \u001b[38;2;255;085;085m\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u001b[0m\u001b[38;2;255;085;085m\u2593\u2593\u2593\u2593\u2593\u2593\u001b[0m\u001b[38;2;255;165;000m\u2591\u2591\u2591\u2591\u2591\u2591\u001b[0m\u001b[38;2;255;220;100m\u2592\u2592\u001b[0m\u001b[38;2;180;180;180m\u00b7\u00b7\u00b7\u001b[0m                                             \u2502\r\n\u2502 2026-07-09 01:34:00+00 \u2502 6.42 \u2502 Lock:tuple=3.75 Lock:transactionid=1.07 Timeout:PgSleep=0.97 Client:ClientRead=0.40 Other=0.23 \u2502 \u001b[38;2;255;085;085m\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u001b[0m\u001b[38;2;255;085;085m\u2593\u2593\u2593\u2593\u2593\u2593\u001b[0m\u001b[38;2;255;165;000m\u2591\u2591\u2591\u2591\u2591\u2591\u001b[0m\u001b[38;2;255;220;100m\u2592\u2592\u001b[0m\u001b[38;2;180;180;180m\u00b7\u001b[0m                                              \u2502\r\n\u2502 2026-07-09 01:35:00+00 \u2502 6.37 \u2502 Lock:tuple=3.85 Lock:transactionid=0.97 Timeout:PgSleep=0.97 Client:ClientRead=0.33 Other=0.25 \u2502 \u001b[38;2;255;085;085m\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u001b[0m\u001b[38;2;255;085;085m\u2593\u2593\u2593\u2593\u2593\u2593\u001b[0m\u001b[38;2;255;165;000m\u2591\u2591\u2591\u2591\u2591\u2591\u001b[0m\u001b[38;2;255;220;100m\u2592\u2592\u001b[0m\u001b[38;2;180;180;180m\u00b7\u00b7\u001b[0m                                             \u2502\r\n\u2502 2026-07-09 01:36:00+00 \u2502 6.50 \u2502 Lock:tuple=3.88 Lock:transactionid=0.98 Timeout:PgSleep=0.98 Client:ClientRead=0.23 Other=0.43 \u2502 \u001b[38;2;255;085;085m\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u001b[0m\u001b[38;2;255;085;085m\u2593\u2593\u2593\u2593\u2593\u2593\u001b[0m\u001b[38;2;255;165;000m\u2591\u2591\u2591\u2591\u2591\u2591\u001b[0m\u001b[38;2;255;220;100m\u2592\u001b[0m\u001b[38;2;180;180;180m\u00b7\u00b7\u00b7\u001b[0m                                             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diff --git a/demos/ash_demo.gif b/demos/ash_demo.gif
index 0bbac55..c1452f0 100644
Binary files a/demos/ash_demo.gif and b/demos/ash_demo.gif differ
diff --git a/demos/container-entrypoint.sh b/demos/container-entrypoint.sh
index eb12d40..4b6b402 100755
--- a/demos/container-entrypoint.sh
+++ b/demos/container-entrypoint.sh
@@ -3,8 +3,7 @@
 #
 # 1. Waits for PostgreSQL to accept connections.
 # 2. Creates the `demo` database, pg_stat_statements + pg_cron extensions.
-# 3. Installs pg_ash 2.0 (from the mounted /repo/devel/sql/ash-install.sql —
-#    the in-progress 2.0 dev installer, not the frozen released sql/).
+# 3. Installs pg_ash 2.0 (from the mounted /repo/sql/ash-install.sql).
 # 4. Initializes pgbench.
 # 5. Starts pg_ash sampling (1s).
 # 6. Kicks off the workload.sh in the background — this produces the spike
@@ -30,12 +29,10 @@ if ! $PSQL -d postgres -tc "select 1 from pg_database where datname='demo'" | gr
   $PSQL -d demo -c "create extension if not exists pg_cron"
   $PSQL -d demo -c "create extension if not exists pg_stat_statements"
 
-  # Install the 2.0 dev installer. The released sql/ is frozen at 1.5 until the
-  # 2.0 release stamp, so the demo points at devel/sql/ to exercise the new
-  # reader API (periods/aas/timeline/top/compare/chart/summary). Keep in sync
-  # with `devel/scripts/ash_sql_chain.py fresh-install-path` if that path moves.
-  echo "[entry] installing pg_ash 2.0 (\i /repo/devel/sql/ash-install.sql)"
-  $PSQL -d demo -f /repo/devel/sql/ash-install.sql >/dev/null
+  # Install the current 2.0 installer. Keep in sync with
+  # `devel/scripts/ash_sql_chain.py fresh-install-path` if that path moves.
+  echo "[entry] installing pg_ash 2.0 (\i /repo/sql/ash-install.sql)"
+  $PSQL -d demo -f /repo/sql/ash-install.sql >/dev/null
 
   echo "[entry] initializing pgbench (scale 5)"
   pgbench -U postgres -d demo -i -s 5 -q >/dev/null 2>&1
diff --git a/demos/record.sh b/demos/record.sh
index 30d9587..2495bd3 100755
--- a/demos/record.sh
+++ b/demos/record.sh
@@ -5,7 +5,7 @@
 #   1. Start Postgres in Docker with pg_cron + pg_stat_statements preloaded
 #      (via the pre-baked demos/Dockerfile image; falls back to a runtime
 #      pg_cron install + restart on the plain postgres:${PG_MAJOR} base).
-#   2. Install pg_ash 2.0 via devel/sql/ash-install.sql, seed pgbench,
+#   2. Install pg_ash 2.0 via `\i sql/ash-install.sql`, seed pgbench,
 #      start sampling.
 #   3. Kick off a workload that transitions baseline -> row-lock spike -> tail.
 #   4. After the spike is well underway, start tmux + asciinema with psql
@@ -423,12 +423,11 @@ sleep "$POST_WAIT"
 log "cast written: $(du -h "$CAST" | cut -f1)"
 
 # --- 5. Shift the first cast event to t=0 ------------------------------------
-# asciinema records the command banner ~70 ms after the session starts; agg
-# renders frame 0 at t=0, which is before that banner, so the resulting GIF
-# opens with an empty terminal. That empty frame becomes GitHub's thumbnail
-# for the embedded GIF. To avoid it, we rewrite the first event's timestamp
-# from ~0.07 to 0.0 so the splash IS the first frame. Subsequent event
-# timings are unchanged (they are relative deltas from the previous event).
+# asciinema can record an ANSI color escape as the first event and the visible
+# command banner ~70 ms later; agg renders frame 0 at t=0, before that banner.
+# That empty frame becomes GitHub's thumbnail for the embedded GIF. To avoid it,
+# rewrite the first visible output event's timestamp to 0.0 so the splash IS the
+# first frame. Subsequent event timings are unchanged.
 python3 - "$CAST" <<'PY'
 import json, sys
 path = sys.argv[1]
@@ -436,8 +435,13 @@ with open(path) as f:
     lines = f.readlines()
 header = lines[0]
 events = [json.loads(line) for line in lines[1:] if line.strip()]
-if events:
-    events[0][0] = 0.0
+for e in events:
+    if len(e) >= 3 and e[1] == "o" and e[2].strip("\r\n"):
+        # Pure ANSI escape setup does not paint useful pixels; skip it.
+        if e[2].startswith("\x1b") and e[2].endswith("m"):
+            continue
+        e[0] = 0.0
+        break
 with open(path, 'w') as f:
     f.write(header)
     for e in events:
diff --git a/sql/ash-install.sql b/sql/ash-install.sql
index c066889..7d9cd36 100644
--- a/sql/ash-install.sql
+++ b/sql/ash-install.sql
@@ -2,12 +2,8 @@
  * pg_ash: Active Session History for Postgres
  * Version: 2.0 beta 1
  * Fresh install: \i sql/ash-install.sql
- * Upgrade from 1.0: \i sql/migrations/ash-1.0-to-1.1.sql, then \i sql/migrations/ash-1.1-to-1.2.sql, then \i sql/migrations/ash-1.2-to-1.3.sql, then \i sql/migrations/ash-1.3-to-1.4.sql, then \i sql/migrations/ash-1.4-to-1.5.sql, then \i sql/migrations/ash-1.5-to-2.0.sql
- * Upgrade from 1.1: \i sql/migrations/ash-1.1-to-1.2.sql, then \i sql/migrations/ash-1.2-to-1.3.sql, then \i sql/migrations/ash-1.3-to-1.4.sql, then \i sql/migrations/ash-1.4-to-1.5.sql, then \i sql/migrations/ash-1.5-to-2.0.sql
- * Upgrade from 1.2: \i sql/migrations/ash-1.2-to-1.3.sql, then \i sql/migrations/ash-1.3-to-1.4.sql, then \i sql/migrations/ash-1.4-to-1.5.sql, then \i sql/migrations/ash-1.5-to-2.0.sql
- * Upgrade from 1.3: \i sql/migrations/ash-1.3-to-1.4.sql, then \i sql/migrations/ash-1.4-to-1.5.sql, then \i sql/migrations/ash-1.5-to-2.0.sql
- * Upgrade from 1.4: \i sql/migrations/ash-1.4-to-1.5.sql, then \i sql/migrations/ash-1.5-to-2.0.sql
- * Upgrade from 1.5: \i sql/migrations/ash-1.5-to-2.0.sql
+ * Upgrade: run sequential scripts in sql/migrations/ from the installed
+ * version to the target version.
  */