docs(versioning): post-1.0 policy with expansion-phase carve-out

Rewrites the "When to bump what" section now that the project is
post-1.0. Replaces the pre-1.0 framing with three explicit rules:

  - Major: surface major bump on a user-facing contract
  - Minor: phase milestone or coherent capability cluster, aligned
    with blueprint Phase boundaries (Phase 5 -> v1.2, etc.)
  - Patch: bug fixes AND additive-only surface changes

The carve-out (patch for additive surface changes) resolves the
tension with the v1.1.x roadmap: every v1.1.x release adds SDK or
schema surface, and strict "minor product bump per minor surface
bump" would inflate the version faster than the user-perceived
"platform changed" milestones warrant.

Examples updated to reflect post-1.0 numbers and the new policy:
adding KV in v1.1.1 (patch), cutting v1.2 as a phase milestone
(minor), renaming a ctx field (major).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

docs/versioning.md

@@ -106,19 +106,15 @@ A versioning scheme without enforcement decays in months. Five cheap mechanical
 
 ## When to bump what
 
-The product version follows SemVer applied pragmatically — we're pre-1.0, so the rules are looser:
+The product version uses SemVer with one carve-out for the platform's expansion cadence:
 
-- **Patch** (`0.2.0 → 0.2.1`) — bug fixes, no surface change
+- **Major** (`1.x → 2.0`) — surface major bump on a user-facing contract: removed/renamed/retyped SDK function, retired API version, breaking schema change that requires user action, breaking wire-protocol change.
-- **Minor** (`0.2 → 0.3`) — any surface bump, new features, or breaking changes (pre-1.0 license)
+- **Minor** (`1.1 → 1.2`) — phase milestone or coherent capability cluster. Bumped when the maintainer marks a release as "the platform moved forward in a way that warrants a number". Typically aligned with blueprint Phase boundaries (Phase 5 → v1.2, Phase 6 → v1.3+).
-- **Major** (`0 → 1`) — first stable release; SDK and API both committed to long-term compatibility
+- **Patch** (`1.1.0 → 1.1.1`) — everything else: bug fixes AND **additive-only surface changes**. New SDK function, new admin endpoint, new schema migration that only adds tables/columns, new env var, new trigger kind — all patch.
 
-After `1.0`, the product version follows strict SemVer based on the *worst* surface change:
+**Why the carve-out:** PiCloud ships in many small additive PRs (every v1.1.x release adds SDK surface). A strict "minor product bump per minor surface bump" rule would inflate the product version faster than the actual user-perceived "platform changed" milestones warrant. Patch-for-additions keeps the minor digit aligned with capability clusters, not individual feature drops.
 
-- Any surface major bump → product major bump
+**Surface versions follow their own rules** (table above) and don't track the product version. A surface can independently hit its own `1.0` or `2.0`. The SDK in particular is likely to stabilize before the platform does, since scripts in production demand it.
-- Any surface minor bump → product minor bump (at minimum)
-- No surface changes → product patch
-
-A surface can hit its own `1.0` independently of the product. The SDK in particular is likely to stabilize before the platform does, since scripts in production demand it.
 
 ---
 
@@ -138,15 +134,19 @@ Read live from `GET /version` on any running instance.
 
 ## Examples
 
-**Adding a `kv.*` SDK in v1.1+:**
+**Adding a `kv.*` SDK in v1.1.1:**
-- Workspace bump: `0.2.0 → 0.3.0` (pre-1.0 minor)
+- Workspace bump: `1.1.0 → 1.1.1` (patch — additive SDK + schema, no breakage)
-- SDK bump: `"1.0" → "1.1"` (added functions only)
+- SDK bump: `"1.1" → "1.2"` (added functions only)
-- API bump: none (no new endpoints affect existing API contract)
+- API bump: none (admin endpoints for trigger CRUD are additive)
-- Schema bump: `1 → 2` (`0002_kv_store.sql` adds the `kv_store` table)
+- Schema bump: `6 → 7` (`0007_kv_store.sql` adds the `kv_store` table)
+
+**Cutting the v1.2 release (Phase 5: workflows, advanced query, interceptors):**
+- Workspace bump: `1.1.8 → 1.2.0` (minor — phase milestone)
+- Even if no individual change is breaking, the maintainer-marked phase transition warrants the minor digit.
 
 **Renaming `ctx.execution_id` to `ctx.exec_id`:**
-- SDK bump: `"1.x" → "2.0"` (breaking)
+- SDK bump: `"1.x" → "2.0"` (breaking — removed/retyped script-visible field)
-- Product: minor bump pre-1.0, major bump post-1.0
+- Workspace bump: `1.x.y → 2.0.0` (product major — user-facing contract break)
 - Migration path: keep `ctx.execution_id` available in 1.x for a deprecation window, add `ctx.exec_id` alongside; flip to 2.0 only when both fields have shipped together for a release.
 
 **Adding pagination to `GET /api/v1/admin/scripts`:**