docs(m011): record approved MVP playtest evidence

PLANS.md

@@ -984,7 +984,7 @@ the ESP32-C6 Flash, RAM, socket, and network limits.
 
 ## Milestone 011 — Gameplay tuning and MVP acceptance
 
-**Status:** `IN_PROGRESS`
+**Status:** `COMPLETE`
 
 ### Objective
 
@@ -1024,8 +1024,6 @@ Implementation is in progress. `docs/BALANCE_REPORT.md` locks the current MVP
 gameplay configuration and records the deterministic maze metrics. The
 playtest procedure and result table are in `docs/PLAYTEST_REPORT.md`, and the
 criterion-by-criterion evidence register is in `docs/MVP_ACCEPTANCE.md`.
-Representative completed-match timings and the final release build record are
-still required before this milestone can be marked `COMPLETE`.
 - On 2026-09-08, `bash scripts/run_host_tests.sh` passed its health, Wi-Fi,
   NVS, provisioning, lobby/protocol, maze, game, disconnect-recovery, browser,
   and web-asset suites. The locked 1,024-seed sweep reported cycles `133..133`,
@@ -1035,6 +1033,110 @@ still required before this milestone can be marked `COMPLETE`.
   RAM bytes and 1,028,956 of 2,097,152 application bytes. The matching
   `buildfs` command passed using 2,031,616 of 2,031,616 LittleFS bytes.
   `docs/MVP_ACCEPTANCE.md` records version `0.10.0`, build hashes, and the
-  19,253-byte reproducible web payload. Human playtest evidence for the
-  approximately five-minute target remains pending, so Milestone 011 is
-  `IN_PROGRESS` and Milestone 012 has not started.
+  19,253-byte reproducible web payload.
+- On 2026-09-08, the project owner confirmed the representative physical
+  two-player playtests worked as expected with no gameplay defects or balance
+  issues. The owner explicitly approved an evidence deviation for acceptance
+  criterion 2: no match count or elapsed-time statistics are required. The
+  approval, its scope, and the absence of a hard timer are recorded in
+  `docs/PLAYTEST_REPORT.md`; criterion 12 of `MVP.md` is mapped as passing by
+  that approved deviation in `docs/MVP_ACCEPTANCE.md`. Together with the
+  deterministic balance evidence, complete mapped MVP evidence, and matching
+  release-candidate images, this satisfies every Milestone 011 acceptance
+  criterion. Milestone 011 is `COMPLETE`; Milestone 012 remains `NOT_STARTED`.
+
+## Milestone 012 — Combinatorial humorous name suggestions
+
+**Status:** `NOT_STARTED`
+
+### Objective
+
+Replace the small fixed set of humorous player-name suggestions with a
+deterministic, varied generator that combines a Russian adjective and noun in
+the manner of Docker's random container names.
+
+### Scope
+
+- Define bounded Russian adjective and noun vocabularies suitable for the
+  player-facing lobby.
+- Generate valid UTF-8 name suggestions by combining one adjective and one
+  noun, with a hyphen between them.
+- Cycle through the available combinations deterministically before repeating.
+- Skip combinations already assigned to a player session.
+- Retain the existing bounded response size, protocol shape, and Russian
+  player-facing error behavior.
+- Add deterministic host-side coverage for combination count, cycling,
+  uniqueness, occupied-name skipping, and valid output bounds.
+
+### Deliverables
+
+- Combinatorial humorous-name generator in the authoritative web gateway.
+- Portable host tests covering the generator's selection rules.
+- Updated protocol/lobby test evidence.
+
+### Acceptance criteria
+
+1. Each name suggestion has the form `adjective-noun`, uses valid UTF-8, and
+   satisfies the lobby name-validation limits.
+2. The generator provides substantially more combinations than the previous
+   five fixed suggestions and does not repeat one until its configured
+   combination set has been traversed.
+3. A currently occupied player name is never suggested.
+4. Exhaustion returns the existing bounded Russian `no_suggestion` error.
+5. All existing host tests and the targeted generator tests pass.
+6. The firmware builds and remains within the factory partition budget.
+
+### Evidence
+
+Completion evidence is not yet available. Expected evidence includes the
+targeted host-test output, `bash scripts/run_host_tests.sh`, and
+`/home/sasa/.platformio/penv/bin/pio run -e esp32-c6-devkitm-1` output with
+the final application-size report.
+
+## Milestone 013 — Random humorous login headlines
+
+**Status:** `NOT_STARTED`
+
+### Objective
+
+Make the login screen feel more lively by selecting a humorous Russian
+headline at random whenever a player opens the page.
+
+### Scope
+
+- Expand the login screen's bounded set of player-facing Russian humorous
+  headlines.
+- Select one headline using browser-provided randomness when the login page is
+  initialized.
+- Provide a safe fallback when strong browser randomness is unavailable.
+- Preserve the existing responsive layout, accessibility semantics, and static
+  asset-size constraints.
+- Add deterministic browser tests by injecting or stubbing the random source.
+
+### Deliverables
+
+- Expanded login-headline vocabulary in the browser application.
+- Random headline selection with a bounded fallback.
+- Browser tests for selection, fallback behavior, and visible Russian copy.
+
+### Acceptance criteria
+
+1. The login screen has a substantially expanded set of humorous Russian
+   headlines, all appropriate for player-facing UI.
+2. On separate page initializations, the application selects a headline from
+   the configured set using browser-provided randomness rather than a fixed
+   sequence.
+3. If the preferred random source is unavailable or fails, the login screen
+   still displays a valid configured headline.
+4. The selected headline remains readable and does not break the login layout
+   at the responsive sizes defined in `docs/UI_STYLE.md`.
+5. Targeted browser tests and `bash scripts/run_host_tests.sh` pass.
+6. The regenerated web asset is deterministic for a given source tree and
+   remains within the LittleFS payload budget.
+
+### Evidence
+
+Completion evidence is not yet available. Expected evidence includes targeted
+browser-test output, `bash scripts/run_host_tests.sh`, and the reproducible
+web-asset size and hash report from
+`/home/sasa/.platformio/penv/bin/pio run -e esp32-c6-devkitm-1 --target buildfs`.