Add Pheenix galvanics flyers and Sibert stamper prep specs

docs/equipment/pheenix-alpha/: the four Pheenix Alpha electroforming flyers
(2024: PASU silvering, PPPU pre-plating, PDPU dual-cell plating, PMPB
passivation bench), renamed from their download hashes.
docs/equipment/sibert/: the VSP, VSF and VSC technical specifications
(2021), plus Sibert's 2008-09 optical-disc SPS literature and the 2008
Blu-ray stamper characteristics paper in sps-optical-disc-2009/. Two
byte-identical duplicates in the download were dropped.

New docs/equipment/galvanics.md, the metal-path counterpart to
pressing-line.md: datasheet tables for both ranges and what they change.
Pheenix is a second turnkey galvanics vendor next to Digital Matrix and
can quote lacquer-to-record as one vendor; neither range includes water
treatment. Utilities from the sheets (~27 kVA connected per line, DI water,
12-20 C cooling water, extraction sizes), ~5.6 m2 of footprint, and a cell
count estimate (one PDPU at the low end, two at the high end). The Sibert
machines are single-phase, 200/250/600 kg on castors, centre manually and
list no data interface; the VSC locates on the punched hole; the finisher's
water carries nickel. Weights, cycle times, prices and mould fit are listed
as quote questions.

Backlinks and small updates: README (bullet, layout tree, vendor list),
roadmap items 6 and 23, vendor landscape, supplier map, exhibitor briefing
(on-file notes, Sibert three-phase question answered), digital factory
(Pheenix PLC data, Sibert data question, RFQ clause 5), quality automation
(hardness on the centre slug, BD paper as the acceptance-spec model),
sustainability (finisher water), total investment block label (numbers
unchanged), scale (galvanics feeder note), crane weight table, process
flow, pressing-line stamper-fit question, plant page detail lines.

docs/suppliers/vendor-landscape.md

@@ -126,6 +126,9 @@ zero-discharge plating room at Gotta Groove Records in Ohio, built around a
 wastewater evaporator, is the reference model), and no stamper
 punching/finishing equipment (see Sibert below). No Southeast Asia
 distributor; contact is via the US factory or their Japan/Korea distributors.
+Pheenix Alpha (below) now offers a competing line unit for unit; the
+datasheets and the comparison are in
+[galvanics and stamper prep](../equipment/galvanics.md).
 
 ## Stamper preparation: Sibert Instruments (UK)
 
@@ -134,6 +137,12 @@ since the early 1970s) makes the machines that turn a raw electroformed
 nickel shell into a press-ready stamper: the VSP center punch, VSF
 back-finisher, and VSC coiner (trim and form in one pass). One-off capital
 equipment filling exactly the gap between the plating line and the presses.
+The 2021 technical specifications are in
+[`../equipment/sibert/`](../equipment/sibert/): all three run on
+single-phase power and 6 to 8 bar air, weigh 200, 250 and 600 kg, and list
+no data interface; centring on the punch is manual under ×100 optics.
+Figures, mould fit and the service model are in
+[galvanics and stamper prep](../equipment/galvanics.md).
 
 ## Stamper service, as a bridge: Stamper Discs (UK)
 
@@ -147,7 +156,7 @@ then overflow capacity and a quality benchmark. Watch-outs: a small
 single-site operation, no documented Asia customers yet, and two
 international freight legs per job.
 
-## Fully automated presses: Pheenix Alpha (Sweden)
+## Fully automated presses and electroforming: Pheenix Alpha (Sweden)
 
 [Pheenix Alpha](https://www.pheenixalpha.com/) (Solna) is the direct
 successor of Toolex Alpha, founded in 2006 by former Toolex staff. Their
@@ -163,3 +172,14 @@ working precedent for the renewable-steam question. Pheenix also offers the
 splatter and short runs, which makes them a possible single-vendor
 alternative covering both halves of the 50/50 fleet; that option should be
 weighed against the Newbilt plan on price, spares, and support.
+
+Pheenix also builds **electroforming equipment**: an automatic silvering
+unit (PASU), a four-position pre-plating unit (PPPU), a two-cell production
+plating unit (PDPU, up to 200 A per cell) and a passivation and cleaning
+bench (PMPB), the plating units PLC-controlled with network access (2024
+flyers in [`../equipment/pheenix-alpha/`](../equipment/pheenix-alpha/),
+summarised in [galvanics and stamper prep](../equipment/galvanics.md)). It
+calls itself the only manufacturer of both electroforming and pressing
+systems, which makes it a single-vendor candidate for the whole chain from
+lacquer to record, not only for the presses. The flyers give the company's
+address as Skepptuna, Märsta.